Clarence, I understand your point of view, but it's not the only point of view or experience. I would ask that you be gracious and understand that your experience is not the definitive and only experience of everyone on the entire planet who gets banned.
...don't believe the stories of Google banning account for NO Reason. There's plenty or reasons, but the Webmaster don't want to admit to them.
Clarence, I have a lot of experience discussing websites with web publishers. It's not that the webmasters don't want to admit to a reason. In some cases the webmaster HONESTLY believes their site is fine. One thing you are overlooking is that many publishers honestly do not know what is wrong with their website. They are blind to the faults of their website. Even when the faults were pointed out, the first response is to explain it away and insist that it's not really a fault. I kid you not, these babies were butt ugly, I mean put a paper bag over their heads ugly. But the publishers were convinced their site met the standards.
The other correction I need to make on this is that Google never bans an account for no valid reason. That is incorrect. Google has a history of rolling out fallible algorithms that consistently result in some false positives. Everytime Google does a Search update, for as long as Google has been around, Google reviews the results and then fine tunes the algorithm because there are always false positives. It is a FACT that Google's algorithms are not perfect, there are always false positives in the results. Thankfully their engineers know this and they take feedback and update their algorithms accordingly.
The takeaway Do not take it for granted that everyone who says they were banned is lying. Do not assume that every Google algorithm is perfect.