I think posters on both sides base their "ban happy" comments on what they experienced before the reformatting of the boards. I don't have an explanation for it, but it seems moderators on both sides have been pretty "flexible" in allowing vigorous debate since all the old bans were lifted. FTR, I have been given temp bans several times on the UK boards, and only once did I feel it wasn't worthy, but I didn't contest or complain about it. I just served the time out and moved on.
FWIW, if you keep posting about something that keeps getting deleted, I would stop posting about it and stay with the topic of the thread. My guess is someone didn't want the thread to get detoured or high jacked.