The people here pushing blood libel, flat earth, aliens, motherships, etc are here for one reason: To draw credence away from Q theories and to create the broad-strokes illusion that Q followers are nutters.
They are more dangerous than CNN talking about "QAnon," they likely aren't genuine, and they should not be welcome. Report them when you see them.
You make a good point but don't exaggerate -- they're not more dangerous than the thought police propaganda arm of the Ministry of Truth -- China News Network et al.
While some of these people are shills, some are being sincere and some are maybe nutters as you say, BUT ALL have the freedom of speech and thought.