That's what they said in the first article. The second link you posted states
After many heavy thoughts, we had decided to agree with their claims. We did not make it easily; it is very hard decision for us.
That doesn't sound like, we could take them to court but it's just too much hassle.

Unfortunately OpenIV enables recent malicious mods that allow harassment of players and interfere with the GTA Online experience for everybody.
I guess that's the part they agree with, yet why not find a solution. Too much hassle for T2 to ban those malicious mods individually, too much hassle for OpenIV to ban malicious mods. Doesn't T2's online server have some kind of integrity check to keep mods out of online?

I doubt they're worried about losing money from mods. It's only a positive for selling games, while people that buy DLC won't suddenly stop buying DLC to mess around with amateur mods. Losing online players from malicious mods is much more concerning for T2. Once an online game gets tarnished as a safe haven for cheaters and exploits, people start leaving and stop spending money on it.

Bethesda's whole thing has been explained.  It's a program only a very small number of modders will be able to participate in.  You basically have to apply and after they are convinced you can produce the quality they want, you can submit proposals to them.  You have to have a dev timeline, alpha and beta plans, etc etc.  Basically, a professional development roadmap and design doc.  Most of the Creation Club stuff sounds like it will be Bethesda and 3rd parties.  And all work has to be created by you specifically for your Creation Club work.  In other words, old mods are prohibited as is borrowing assets from them.  This is why I'm not freaking out, it's not modding.  It's another thing entirely that modders who want to take their work really seriously as a possible part time job can do. 

I still to this day play gta V online a lot on ps4. 2 days ago I spent about 6,000,000 in game $ (earned legitimately) on the new bunker update. I've earned about $60,000.000 in my career so far with around $8,000,000 still in the bank.

Anyway point is I've played this game properly and I'm around level 150. Which just shows if you're good at gta online you can make a ton of money without needing to buy shark cards. And it's not like I'm a super high level who plays daily.

So if I was on pc and R* felt modders could hamper my experience I'd fully support them shutting down mods. And if it damages their earning ability from the game I fully support it too. It's their game and they're entitled to maximise profits especially on one of the best titles ever created.

I'm so happy with the experience they've provided me on console and I'll be buying RDR2 day 1 and will enjoy the shit out of it. Same for GTA 6 in a few years.

I can understand some pc players being pissed and this news really sucks for those who enjoyed mods on pc, but at the end of the day they need to protect the online experience especially when millions spend real money on shark cards.

It is a cry for attention by Take Two. You guys never give them attention. It is always EA, Activision, Bethesda and even Ubisoft. Give them some of your nerd rage, gamers.

I don't play this game. According to video, mods didn't effect online. Used for single player primarily if not exclusively. 

https://youtu.be/kfaaWDIbXOA

They always try to patch it but there's a lot of cheating for money and xp going on.  Happens on console too because the ps3 and 360 could be modded.  And they'd transfer the accounts over to next gen. Think that's why they disabled that transfer feature with a recent update. 

It would matter if T2 actually cared in return, but they don't. At elast with EA we get results like the recent showing of Battlefront 2 being played on PC first and the same with Destiny 2 with Activision. All the outcry for RDR 1 on PC at T2/R* has gone nowhere. 

Hm... I honestly thought this was going to be about how Nintendo shut down all the Metroid 2 remakes and then decided to release a Metroid 2 remake...

This has long been one of my greatest concerns about modding and consoles... not that the two couldn't co-exist, but that it provides an excellent excuse for closed platforms to close them down.