I honestly just wanted to say it "zucks to suck." Andrade is decent wrestler but couldn't get over on the main roster, maybe he'll do better elsewhere but we've seen what AEW has done to Rusev so he may end up a chump there as well.
I respect you getting your shit in.
Completely disagree with everything you're saying though.
How many people in WWE do you sincerely consider to be over? I'd have the number being less than 10 personally, most people there only have fanfare by virtue of being on the show, it's pretty much limited to the likes of Reigns, Fiend, Bryan, Edge, Sasha, Orton and maybe McIntyre and Big E who could truly be relied on to garner fan interest and I don't think there's any evidence that any of them are recouping fans who have lost interest either, so I just don't see portraying it as Andrade couldn't get over because so few do.
Miro is a worst case scenario for someone who leaves WWE in terms of trying to "prove everyone wrong", I agree he is working a terrible gimmick. On the flipside of that you have Mox, Brodie, Spears, Cody and FTR who have done their best work on a national level and been booked to seem important in AEW. You also have Jericho and Hardy who are getting a great spotlight and the chance to do shit they love at the tail end of their career, even if I think they're both physically washed now. We don't have to limit this to AEW though because you can also look at Sami Callihan in Impact and Juice Robinson in NJPW for some other examples.
I just come back to my belief that WWE's roster is too big and they are only able/willing to focus on a handful of people at any given time. If you're someone who believes in your ability to contribute and do meaningful stuff in your career, and you're on the sidelines for no good reason for extended periods, you're going to want to explore other options. It only makes sense. For myself personally, I never go into these stories of people being released with an anti-WWE attitude, I'm just pro-pursuing what you want in your career. I don't see that being a divisive take.