I'm a 90s kid and LOVED All That and some of the late 90s content so I watched this in full.
I don't think the doc is entirely objective in some parts? The journalists do a lot of monolgues in it. The Drake Bell thing was sad, especially the dad...but I'm not sure of the negative impact with Schneider? It was clear he became toxic and super imposed inappropriate jokes on children, 100%.
The girl from Zoey 101 being interviewed has some flak on reddit for being a doxxer, plus she and the main character had documented beef history...so I don't find her to be fully credible. I'm not sure how take McCurdy, and Ariana is quite the drama diva anyways so its hard for me to believe McCurdy IMO... but the toxicity on set is veritable.
A lot of the various actors' frustration and trama was about being around pedos which is rough....but also with being overlooked? I don't feel it's fully to blame on Schneider as the showrunner, even if the requested stuff was weird? Again, toxicity yes but I'm not sure on an abuser...based on this doc.