well yeah, that's how coffeeshops are here. never been to a dispensary in the US, but from what I read/see online they developed more from the medical corner, so they're more clinical, try to look more professional, include stuff like cannabinoidpercentages, etc.
coffeeshops here in the netherlands evolved more like bars, a lot of them are not particularly notable, dark, some typical rasta/weed decorations, some chairs/tables and maybe a pool table. but some of them are more like the better bars, or like an actual coffee/teashop, more open and light, more and better decorations, plants, bigger assortment drinks/tea, sometimes food and boardgames. but it's a very different vibe from clinical/medical, it's more focussed on 'gezelligheid', a mellow place where it's nice to hang out.
and I think amsterdam has a bit more of those not really remarkable dark shops, since amsterdam has so many shops in total, and with all the tourists I guess it's not too hard to stay in business even with a mediocre coffeeshop. and many shops that focus on tourists double down on the rasta/weedculture stereotypes, becoming almost a parody of it. and I can kind of understand that, most coffeeshops I know(outside amsterdam) aren't really that noticable from the outside, usually there's 1 sign or so that gives away it's true identity(a weedleaf, or rastacolors), but not much else to go on, so I can understand that if you want to attract tourists who are not used to recognising coffeeshops, and there are many more coffeeshops around, it works to attract attention with obvious weed-imagery. (it's also forbidden for coffeeshops to advertise, so signs on the building itself and word-of-mouth are pretty much the only ways to get people to visit)
you're probably not getting away completely from the weedculture-images and stereotypes, but there's a lot of difference between a purely touristfocussed shop(lots of attentiongrabbing, expensive weed that's probably not worth it's price), or a shop more focussed on locals, that tries to get people to keep coming back there instead of just trying to get tourists to visit one time.
if you want to avoid those typical touristshops I would go to another city as amsterdam, most tourists stay in amsterdam so outside amsterdam you won't find as many shops that purely depend on tourists for business.
and maybe it also plays a role that there are no new licenses for coffeeshops being given out(I think, not 100% sure), so any new startup would have to take over an existing coffeeshop to get a license, so since it's not easy to start a new shop from scratch you probably will see less innovation on the existing concept.
