When you put a huge open world and complex physics and as many mechanics and systems and subsystems as BOTW does and get it to run 30FPS on a 2014 mobile chipset, you're fucking magicians. Trying to use that as some negative is beyond idiotic. BoTW does not exist as a Multiplatform game(yes we know it's on Wii U as well, still reclusive to Nintendo) . It would be a safe Zelda game.

From my memory, the only major technical bug on BG3 on my PS5 that I can see related to the platform was a texture bug, which lead characters to have ugly/pixelated textures sometimes. Same issue didn't happen on PC (I played both)

All other bugs I got were related to broken questlines due to trigger errors, problems that would happen regardless of the game being single or multiplat, ex: The fact you could literally explode a book to open a chamber so Shadowheart could take Shar's Spear. Without this book you're locked out of her Dark Justiciar questline which would ultimately made her to leave your party. So you lose a companion because devs made an oversight on allowing you or enemies to destroy a hidden book you don't even know you need without further notice 

Several questlines were broken due to NPCs not recognizing your actions and becoming hostile or unresponsive, but again, those are all programming/logic malfunctions, not related to the platform 

You are in denial if you think those games didn't have preformance issues.

Zelda would dip plenty of times when switching to your power modes like Ice or time especially during combat.

Spiderman 2 you would literally turn into a cube lol. Come on man.

Now im not saying they are bad games, but having a game designed on 1 platform means nothing to the outcome on the games polish. The budget doesnt increase because they choose one console, if anything the budget shrinks and the corpos pocket it.

Have you played BOTW or TOTK? It had dips and plenty of them, now that's coming from someone who finished both games and consider them some of the best games I have ever played, difference between me and you is i am not in denial. Ill say it how it is.

Also you completely ignored the Doom and Indiana Jones argument, you wanted to bring up Bethesda so why are those multiplatform games more polished then some 1st party games?

I find it funny you completely tried to ignore that part in your reply. 

Your quote, not mine.

"every fucking Bethesda game ever made"

Where would we be without exclusives? Everything would be just shooters, sports and MMOs.
I exaggerate, but think about it.

Agree with this.

I'll add that usually it's to do with how the games are made to prioritise features and the gaming experience on the platform. To utilise the platforms power (or lack thereof) and it's control systems to create the best gaming experiences.

I almost never like games that are multiplatform. I associate it with sports games, shooters and movie tie-ins. Probably not fair of me but that's how it is.
When it comes to the different exclusives for each platforms I kind of list it as:
Sony - Action adventures, RPGs
Xbox - FPS, - (pretty much draws a blank here, never had a reason to play Xbox)
Nintendo - Plattformers, Action adventures, Party games
PC - RTS, MOBA, MMO
Mobile - Puzzle, strategy games

Of course each type of game exist on each platform but the best exclusive titles to often falls somewhere there. From the type of games I generally play at least.
The deciding factor if a game works well is how it controls.
Games that are good on PC is often games that work best with a mouse. RTS specifically,
Games that are good on Mobile are often games that work best with touch screen. Puzzles.
Games best played in a sofa with a big screen are best with a console and regular controller. Action adventures, couch co-op and party games.

Being an exclusive title is not necessary but I do think how a game is best played is determined by the platform it is on.
Sitting in an office chair playing games on a PC with a controller does not give me the same experience as playing that same game in my sofa with a larger screen and sound system. Playing online heavy game without a keyboard for text communication is also not the same. And I will never go back to playing picross without touch controls.

Consoles were good as long as they offered a cheap way to play video games.
Playstation 1 & 2 were cheap devices that most people played pirated games on them.
Playstation 3 was also a relative cheap console that you could play 20$ video games if you waited for prices to drop.
Playstation 4 was like PS3 with floor prices of games on 30$.

I think this will change with next generation consoles.
With speculated prices of consoles on 700$ range and 70$/80$ games, it makes them an expensive habit like PC gaming.

Usually it ain't only one hardware target anymore. A PlayStation-exclusive on PS4 is expected to also run well on a PS4 Pro, a PS5, a PS5 Pro and probably even on a PS6 and PS6 Pro. Additionally there ain't only one setting for perfect optimization, you have to optimize for several settings (performance mode, resolution mode, RT mode...)

So the days of programming "close to the metal" are over and it ain't much different anymore compared to multi-plattform development. Hardware abstraction got very important for "exclusive" games.