I realize the decline but his bike was easily fitting of a girls bike of yesteryear. He couldn’t hike his leg up to get on it otherwise.... They can call it whatever they want but the reason is still the same.
This is a Trek FX 3 Hybrid Women's:
I'm not sure that's Biden's exact model, but it's close enough.
It's not like in the old days.
You can still buy old fashioned girls' and boys' bikes, but the differences are minimal for adult bikes.