Its a big club and you're not in it (well maybe YOU are, fucking redditors) 
Woody Allen is the most bourgeois filmmaker I've ever seen. Can you name a single black person in his countless whitewashed movies about "iconic New York City"? There's the one sex worker named "Cookie". It makes sense that PMC class character would make even Jewish people hate their black neighbors as much as white nazis in suburbs...that actually explains a lot about Hannah Arendt's contempt for eastern European Jews in her holocaust revisionist journo propaganda lol
My gut feeling is that instead of swinging politically based on economic needs they swing politically based on self-actualisation. The ones chasing prestige in society (journos being the most obvious) swing bougie while the ones chasing other forms of self-actualisation through things like art swing left.
They're workers except their work is comfortable and well paid enough for their economic needs to be mostly met. So different issues end up taking the forefront in their decisions. If they don't have aspirations to become boug then self actualisation and other needs take the forefront.