You got a point on dutch teenager height lol. By super popular I mean most blocks id see at least one or two parked or riding by me. I was staying around the museum district. To your point though I suppose when there's like 50 bikes per street in some of those areas along the that doesn't make it "super popular". ( https://maps.app.goo.gl/SDP55mmEDotWMuaK8 )

I've seen them before in Seattle too around 2017 when prime now was still a thing.

I shouldn't have said super popular, you're right, and more like early than late teenagers (thinking of my brothers), and even then I don't think it would be comfortable. I am saying they're an option if you really need the cargo room though.

Stuff like this is comically large imo

https://urbanarrow.com/family-bikes/family/

And then there's the absurd https://www.icebike.org/biggest-cargo-bike/

Realistically this is my gf's bike, albeit with the running boards and a pop up basket in place of one seat in the back

https://ebikeescape.com/lectric-xpedition-review/

And this is a newer trim of my bike, although I have paniers and a pop up cargo basket on the rear rack

https://www.juicedbikes.com/products/ripcurrent-s