Hi @CallieAlreza,

The short answer is "yes", users can be banned from the Community.  I believe getting banned is a rare occurrence though.  If you follow the  What are the Instructure Community guidelines? - Instructure Community - 2978, you should generally be fine.  I believe the Community Team reaches out to any users who are doing inappropriate things in the community to give them a chance to change before taking action to ban them.

I hope this helps.

-Chris