I mean, I'm not going to pick up sword and shield to fight for Warner Bros honor if they, hypothetically sold off the rights to make a Superman movie and then regretted it when they wanted it back.
I find a lot of this "MCU Good, Sony are the villains" stuff kind of laughable.
Regardless of how people feel about the MCU in general, I think most people can admit that they do a good job respecting and adapting their own IP. Sony's own track record, even outside of Spider-Man movies, is spotty at best and filled with poor IP management, then you got Tom Rothman who is running Sony Pictures who has his own infamous history with superhero/X-Men films during his time at Fox and it's like Sony are the good guys here? Also, if you read the emails from the Sony hack, especially related to Spider-Man, Kevin Feige had very good notes regarding ASM2 while Sony's execs just came across out of touch and cynically business minded every step of the way. It's not surprising that people trust Feige more.
The fact that fans want to see the Marvel characters interact in an interconnected universe when that is Marvel's whole M.O. (and they are actually willing to take risks on lower tier characters) is no reason to fault them for it or disingenuously paint it nothing more than cynical corporate cheerleading as if there wasn't people rooting for Sony or Comcast in the Fox buyout for their own petty and selfish reasons.
Maybe you can act like you could just hypothetically accept/support the business decisions of WB's if there was somehow some similar corporate battle over the rights of DC characters, but I'm sure every time you watched a CW DC show where suddenly a DC character was made off limits because of the movies might potentially do something with them or they had to write a character out of a show, you felt some type of way about it rather than just saying, "Eh, it's just business. It is what it is."
Also, it really says a lot about the type of deals that were in place that it was easier for Marvel to regain the rights to Fantastic Four by straight up buying out Fox than there being any chance of the rights reverting back to them despite not making movies with the characters. All they have to do is shit out a cynical reboot every 7-8 years or whatever and the calculation could be that it makes more financial sense to make a movie that loses money than allowing the IP to revert, especially since Marvel is increasing the value of their own IP through their movies and a studio can just demand a ton of money for Marvel/Disney to buy it back from them. The unreleased Roger Corman Fantastic Four movie was the most obvious example of the lengths they would go to to hold onto the IP, that was way before the MCU or even Marvel movies were proven to be profitable.