Recently, X's risk control has become extremely strict. Since the beginning of the month, I've lost five hundred followers.

It's not unfollowing; they all got banned... The specific reason is unknown. Can someone explain? The proportion is quite high, about 3%?
Old accounts with the three-piece set, and well-bound high-quality accounts, also have many being banned.
Various accounts that send harassment private messages asking for dates every day, why aren't they banned?
Only users who silently view messages while spamming posts are being banned 🙃.