I'm with you. Seat angles that make sense on a full suspension, where the rear sags and the seat travels backwards, do not make sense on a hardtail. Something that looks fashionably steep on paper ends up very steep on a hardtail once the fork sags.
I am riding a 2019 Rootdown with 150 fork (10 mm shorter than stock) and feel quite over the bars while seated. I am not sold.