I worked in psych hospitals for several years back in the day; we occasionally had a patient who believed they were Napoleon, or some such. We treated them with sympathy and caring. We did not give them funny uniforms with shiny buttons, infantry, and artillery.
You also didn’t encourage them or exploit them to undermine society and push perverted agendas.
That is the thing! These people are mentally ill. And sometimes, they’re MADE THAT WAY these days with these insane enablers!