Lets see Ishida went from a relatively normal person writing an edgy horny comic. Than he started became a feminist and was ultra progressive and his comic started sharing those views. After a while his feminist turned into the TERF type and his more progressive views started to fade as TERF characters started taking over his comic. Than he started to believe far right conspiracies, he started pushing the "trans are groomers" and other such shit. And finally he's just gone all anti-Semitic. Now everything is the Jews fault. They are behind everything, from trans people to TERFs, to all presidential candidates to all world leaders.
Is there really a better real world example of someone falling into the dark depths of insanity than Sinfest and Tatsuya Ishida? His decent into madness is archived for us all to see.