i dnt realy understand why you are so upset about the renaissance aestheitc.
it appeas to mirror FR pretty well.
note that FR is a kitchen sink setting and that the level of aesthetic and technology vary greatly based on wehre you are in it.
Rashemen was always based on the Kievan rus and thus it mirrors that ancient vikings and slavic aesthetic.
Baldurs gate was always a bit odd in that.

I guess a lot of people assumed an early middle ages level of technology and fashion.
Quite frankly, thats more Greyhawk than Forgotten Realms.
Now, id actually find it refreshing to go full Dark Ages again with DND, but the current Art just doesnt look that way, and it hasnt since ADnD