There are entire genre's of games that are missing on console, so how can it be a console substitute?

I guess that if you don't care about the 3 platform holders exclusives (very small subset of games anyway) then PC is a very competent console substitute. It have exclusive genres, better perfomance, mods and all.

IMO the best PC exclusives are RTS and 4X games. New good RTS/4X games don't get released all the time these days, but at least it's more good/interesting exclusives than XB1 has.

That same argument can be applied to any platform though.

That is... If you don't like a platforms exclusives, but prefer the exclusives on another platform, then it makes sense to go with that other platform.
Doesn't matter if it's a Switch, 3DS, Xbox One, Playstation 4, PC, Android, iOS, SNES Classic etc' - That argument is appliable to all.

Thus there is no "best platform" there is only the best platform for your own personal tastes... That doesn't mean a platform cant have a technical advantage over another platform on a technical level as added-value incentives.

Total War. There is no CPU that can run it with 60fps when you zoom in.

I agree, but the platform with most games, better performance and most relevant exclusive genres would be PC even if I do prefer to keep on PS because of the exclusives.

PC Gamers don't talk about platform, they talk only about games. You find the PC gamers on Youtube if you look for games.

"IS there an exclusive AAA PC game that uses max power made from the ground up" No, no game is built from the ground up to take full advantage of the highest possible tier of gaming PC. Most developers don't want to limit their audience to just PC and no developers want to limit their audience to people with an i9 and two RTX 2080 TI's in SLI.

That's not to say the games can't take advantage of that power, really high resolution and hz etc, but they're not built specifically for that power from the ground up.

Due to minimum effort for gain, when devs target a much lower configuration what they put for the higher tier are cosmetic stuff.

To a degree I guess, because there are also crappy ports, powerwise,  for example XBX1 is holding on surprisingly good. Sony's AAA games are top notch graphically, despite the PS4 being old thrashy HW. The Last of Us Part 2 will be a new step in technology of gaming, everybody understand this.

Ray Tracing is supported just by a few games, so its not a factor so far. As always, new tech become a thing when consoles adhere to it.

Platfrom restrictivess? Steam is not any better for devs/customer than console manufacters ( this is a huge letdown if we compare how it was in the past ), we have things that are limited to only one producer, biased optimalisation than favors unfairly, mostly the more expensive GPUS and the list go on.

Star Citizen has a lot of trouble, perhaps next gens will arrive earlier.

The only good things that happens for PC as a gaming platform is the huge batch of console games, thanks to AMD unificiation, and MS is one of the biggest publisher on the market now. The rest is the silence.