The article isn't trash. The author knows damn well what painters do and don't do. The "misogyny" is satire aimed at people who don't.
He also specifically calls out Graham for making statements about art history and practice that are factually wrong.
Graham's article isn't just uninformed, it's an example of Developer Exceptionalism - the mistaken belief that knowing how to code qualifies some developers as expert opinionators and practitioners in domains where they've barely reached amateur/dilettante levels of competence.
Art, music, architecture, physics, maths, law, and the rest, all require years of professional dues and effort to reach knowledge and competence - just as coding does.
It's fine having an opinion about them. It's hubris to believe that knowing how to code makes that opinion any more valuable than the opinion of any other untrained non-professional.