Some time ago there was a man active throughout the German-language internet who was very much like Gail Schuler, in that he was obviously schizophrenic and believed that there was a huge conspiracy against him.
He always used the pseudonym "clavacs", a play on his RL name Johann [sometimes shortened to Hans] Klawatsch. If you type "clavacs" or "Hans Klawatsch" into Google, you may still find some remnants of his activities.
Clavacs had formerly been the head of a small construction company, who had decided to become a philosopher - he had
written several books on his personal philosophical views, which were neither well-written nor very original (basically a mix of esoteric stuff about the unity of man and cosmos and some run-of-the-mill left-wing ideas about bringing out people's creativity and protecting the environment). Of course, these were produced by vanity press.
Initially clavacs signed up to many forums in order to generate interest in his books, his posts read like advertisments (which they basically were). Many forum admins reacted unkindly to that and told him to stop that self-promotion. Clavacs reacted very arrogantly, telling everyone that he was the greatest thinker of the last 2000 years and that people had to admire him... and buy his books! After some time, it became obvious how deep the mental rabbit hole was. Clavacs believed that the government was after him, terrorizing him with microwave beams in his own home, watching his every step with miniature cameras and causing him harm day and night. When he tried to sleep, the government beamed nightmarish scenes of torture and rape into his brain (or so he believed).
Some people got very rude with clavacs, telling him effectively to piss off, mainly though because he was very aggressive and insulted everyone on the forums he frequented. Others tried to reason with him, trying to convince him that he was sick and should see a psychiatrist, which just prompted him to call these people government agents.
Clavacs stopped being active on the internet some years ago. The last I heard about him he has emigrated to some place in South America, probably because he thought that the German government couldn't get him there with their microwave beams and miniature cameras.
Anyway, I sometimes ask myself whether it would have been best if people had played along with clavacs? "Yes, the government is a crapshoot, everyone knows that, they supress independent thought, especially when it comes from a genius like you, clavacs..." etc. At least, it wouldn't have made clavacs angry like suggestions about seeing a psychiatrist did.
I recently read in a book that the optimum environment for schizophrenic patients is a low-emotion one, that is, with some friendly people who don't pay too much attention to the patient and his stories, just listen politely from time to time and are friendly but not too involved.