There's a clause in the rules for this, actually. Global 3:
>Board Ownership and User Accounts are granted and maintained at the discretion of the site administration. Severe abuse, neglect, or mishandling of your board, its rules, or its users may result in its loss or reassignment.
There was some reasonable apprehension in the first days of the site over why this rule existed. The most common case where it might be applied is expected to be a malicious BO trolling their own community, or taking over a legacy board just to destroy it or otherwise deprive anons (such as squatting it and locking it just so no one can use it).
However the inspiration for its creation was old 8ch boards who had cultures dedicated to attacking the site from within. I felt that a major mistake that Hotwheels had made before he became a soyblob was in being so hands off that he allowed the site's own enemies to set up bases on it and attack us with impunity. It was a suicidal decision and one that I don't intend to repeat. That being said, no community is going to be prohibited from here just because its content is unpopular. I've received complaints from anons about /abdl/, /interracial/ and others on the basis of their content, but we're committed to neutrality and free speech means free speech.