@Christine455 No, they aren't being censored. What happens is that this site can be quite glitchy, especially if you've just composed a long post. So what those of us who are familiar with that issue do is to try to remember to highlight and copy the entire post before hitting Reply, in case it just disappears into cyberspace, which is really frustrating. Then you can just open a reply box again and paste the whole post back in and hit reply again.
There are things like swear words the Airbnb algorithm will bleep out, and personal info like email addresses and phone numbers, or the name of a guest, but the rest of the post will remain. An entire post only gets removed if other posters flag it as racist or offensive, etc. but even then, usually only the offending parts get removed, and that stuff is done by the moderators, not an algorithm.
Posts don't get censored here just just because they may be critical of Airbnb, as you can see from reading all the posts like that here.