Personally I don't see the merits in perceiving myself as the victim and do my best to consider both sides. Since you mentioned being fairly new to Hive, I figure its best to be as charitable as possible but you really missed the mark on this one and this comes off as a virtue signal or misinformed use of buzzwords. Facebook being centralized is a non factor in this situation as it was a private group you joined and chose to ignore the rules of said group. You could call that centralization but individuals control the communities here so if that's centralization then so is Hive.

This scrutiny you encountered also exists on Hive and if you post in a community like Leofinance but you're not posting financial content or don't follow the rules then you would be met with backlash. Sure you won't be censored but you aren't really censored on FB either just unable to post in that particular group. It also looked like a slap on the wrist to give you a warning as you were only muted for a short while but you decided to overreact and be vile instead of communicating in a civil manner, calling them fuckheads instead of debating them on their implementation. It's their group, they can make whatever rules and moderate however they want and it's generally to clean up the group so it doesn't get junked up by spam. I don't have any authority over what you do with your splinterland cards just like you don't have any authority over their group.

I don't understand where your sense of privilege in this situation comes from. Hope this helps and you maybe check your attitude because people will downvote or flag you if you do that here. People can be very protective of the communities they foster here and there are rules for each community.