Anyone can post wherever they want as long as it's not locked, or a moderator doesn't allow them to. A moderator is most likely not going to do that because no one is being mean to you. If someone was BULLYING you, then a moderator would probably do that. I don't know if this feature exists, but I'm assuming it does or there is something similar.
If you want, you can put them on your foes list, so that you can't see their posts. But remember, doing that isn't totally beneficial. If you do that there is one less person to answer a question like this, which is why I only put spammers on my foes.
I would advise that you NOT put someone on your foes list, because you never know how they can help you, but it's your choice. Because you are a good person, I'm sure you will make the right decision, because there are a lot. Not just putting them on your foes list or not, there are more choices than that. Good luck!