I got banned from the Smith and Wesson forum for daring to mention the future great President Hillary Clinton and her only opposition the wonderful Senator Elizabeth Warren. I just mentioned them but with the stuffy S&W forum if you do that I guess you offend their sensibilities.
I have noticed on this forum that you have to go quite a ways to offend anyone's sensitivities, that is called free speech in some places.
Private forums are under no requirements of free speech. I think many forget or overlook that fact. S&W has to do business in MA, and has to deal with national level politicians, and other realities many may not appreciate and likely do their best to avoid offending/pissing off/etc, politicians who may already have them in their sites (no pun intended) and don't want to supply them additional ammo (pun intended!) for the future.
I'd think simply removing your comment and a warning would have made more sense, unless you've had issues before and or, mods are instructed to ban anyone they consider not following forum rules, etc.
When I have been on that forum in the past, I stuck to discussing guns, usually S&W guns, which is the intent of that forum at the end off the day.