i'm currently doing a master degree in physics at a high-tier german university (tum), male-to-female ratio is like 10-1, and i'd say at a minimum half the guys who are all in their 20's and beyond never had a gf. most of them unironically look like fcking "the-big-bang-theory"-tv show carricatures, (including myself btw) so yeah, i don't think the "4b's" is gonna affect anyone in my social circle, even if basically all women in the country would follow it religiously.
Germany