Pleb taste. Guess that's why he's wearing a trilby.
Do you mean drawing common motives from popculture or using chalk to do it?
If it's the latter; i like the volatile nature of painting with chalk. It's not made to last, something i find appealing.
I know a girl who does a lot of these. about half of her work time is put into harry potter portraits or HIMYM characters, which she sells.
she considers it rendering training, and it gives her enough money to work on her own shit, which no one buys because its weird and disturbing. which is good.