Apparently an administrator of witches.town told someone to jump into traffic.
While I don't agree with this, I think it's wrong to block an instance with over 2,000 users because the administrator. That's just how I feel, though.
The administrator sounds like an asshole, but just the administrator. The entire instance and instance users shouldn't be silenced and/or suspended.
Feel free to suspend or silence instances if you want to, I don't really care. I just think that it would be a better idea to use the feature that allows you to suspend a single user instead.
navigate to settings > Administration > Accounts and find the user you want to suspend (even remote users) and use "preform full suspension" to suspend them.