you seem to think that vector vs. bitmap is a design concern. it isn't. designers care about their form and their function. a better tool means an easier path in the design process, it doesn't matter the tool, vector or bitmap.

I sometimes consult with internal design teams and a lot of them just never switched away from photoshop

The agencies I've worked at only started dumping Photoshop around 2015-ish, going for Sketch and XD.