Most clan servers are just freebuilds (even if themed, or are rps also), they might be better, but still, there's tons of them a ban from one is no big deal.
It is if you want to be in the clan later, one of your friends is there and/or there's a build there you want to see in more detail.
Also, you can't ban me from posting in this topic,
Uhh. Yeah, he can. If you are expressing bad vibes towards the clan or anyone in it you can be banned from clan servers.
and if I was on the blacklist, I probably did something that makes it clear I didn't want to be in that clan.
Not necessarily. For example when Moybus was hating on LewnaJa in the
Krypt thread. He didn't hate the clan, not want to be in it or anything like that, just didn't like someone in it.