I do think the issue goes a little deeper than "the roster are just pussies." That's certainly the case for some, but there's a lot of dynamics at play here.
Firstly, those at the very top of the ladder probably ain't gonna do a got damn thing. Seth Rollins stooges the way he does because he's comfortable. Roman stays quiet (in public, anyway) because he's comfortable. Neither one of them have Twitch accounts so this doesn't affect them. Unless these two men possess a great empathy, they're not likely to stick their necks out and could potentially even pull a Hogan and snitch. And that's just two top guys. Nevermind the people on the lower rungs who feel deeply indebted to this company or are just right wing nutjobs who hear things like "union" or "worker's rights" and violently convulse with the urge to protect the status quo. There's no telling who you can really trust, and the people lower down the card would be taking on a much bigger risk given they make less money and are already treated as expendable and easily replaced.
There's also the cult of personality built into the current culture. The people in power at WWE are all people these wrestlers grew up watching on TV. They're idols holding the keys to living their dreams. That is a powerful amount of leverage to hold over workers. If they came in just seeing it as a job,that would be one thing, but these people consider Vince almost a friend. Never mind the ridiculous, outdated "pay your dues" work environment that more or less trains new hires to be servile and loyal to the system.
There's a lot of mental barriers to break down here before we even get into the weeds of how to actually organize and start making any kind of noise. There are outside forces that want to help, but the hardest part is always going to be changing enough hearts and minds within the company to realize that they are getting screwed and need to do something about it.