I normally only come when clicking on some questions from other StackExchange sites. Every time the questions are protected by user Qmechanic. Is that something like the Community user? I don't see this at other StackExchange sites.
HNQs with $\geq 3$ answer are often protected by a moderator to prevent "thanks!", "me too!", or spam answers by new users. Questions can be flagged to let moderators know that they should be protected/unprotected.
I doubt it would make a difference if I claim that I'm not a bot, so let me just point to the list of current Phys.SE moderators.
10k users can see the statistics of all protected questions here. Here are some screenshots for the rest of users:
Let's play a game: some of these users are human, and the rest are AI's. Which is which?