Not a lawyer. But my thoughts, anyway.
Does this "win the case"? No, there's still a lot of lawyering to do. But you can be sure that the defense attorneys are putting down deposits on boats and summer homes after this revelation. Ka-CHING!
Wife-beater has to be especially careful at trial. But the question, "How would you define a predator?" is easily asked while he is on the stand, by virtue of his Tweets. There's some world-class tapdancing in wife-beater's future. And one wrong step, and suddenly this is admissible. It's been a while since I was in Texas, but I'm willing to bet smug wife-beaters are still not particularly popular with Texas juries. Any jury with a dozen brain cells between them is going to dismiss his claim that this is about justice, and see it as the revenge play it is.
I'm willing to bet that a TCPA loss by Funimation means they will be looking to settle for an undisclosed sum, no admission of wrongdoing, perhaps a public posting that their investigation was "flawed" and looking to move past this to bring people the world-class entertainment blah blah blah. It will be carefully crafted to not antagonize either side so they can walk away. At they end of the day, they are a business and do you know what businesses hate most? Surprises and litigation. Wife-beater and Enabler have just signed them up for probably a year of it in a TCPA loss.
For the other three, they're in too deep. Enabler had her chance to pull the ripcord and leave wife-beater holding the bag (and I'm sure Funimation AND Marchi were sacrificing every goat they could find while praying she did). She decided to defend the wife-beater and with her victim-blaming she becomes an accessory after the fact (rhetorical, not legal). Their cult will publicly continue to excuse everything. A few will seek other lives they can ruin more easily and quietly walk away.