Actually, it's been quite a while since I have posted but was once a very active poster on FGF for years, all the way back to its pre-corporate days. I've posted here probably in the past year or two, so I think my post count was reset at some point when the site was re-formatted. Used to do some basketball content for Shoe back in the day, and we talked a bit about my taking a position with the site as a writer but I wasn't in a position to do so.
Per a previous post, yes, I do post on Cockytalk but only very occasionally (I have read much more than I write since starting a family years ago) and have been a member there since its early days as well. I was also a poster on Rusty the Rooster's board all the way back in the old AOL days, on Plano's Page 3, Order of the Spur, etc.
I have posted plenty of posts critical of players and coaches on Cockytalk (and other sites) over the years, and I have never been banned and I can only recall one post that I ever made that was removed or moved to a different forum... I asked a mod why in a PM and was told that it was not strictly about USC football so it was moved to their more generic forum for sports.
I assume that the reason I was never banned is that I read Cockytalk's posting rules, understood what the mods/owners do and don't tolerate, and posted by their rules because I recognized I was a guest on their site... their house, their rules. I can't speak to the fairness of others' experiences with that site or any other, just my own. The corporate-run boards are certainly more liberal in what they tolerate, but the easy answer to a problem seems to be to post where you like and avoid the places you don't.
I just thought it was kind of ironic that someone would go to the trouble of posting something they knew well would get them banned just so they could go someplace else and complain about it. Like I said, everyone hates an echo chamber unless it's their own voice that's echoing.