It would be weird at first after working around the lack of them for so long but Mojang’s argument that their implementation would “limit the community’s creativity” makes no goddamn sense. If anything, arbitrarily refusing to add new things to keep the game fresh has seriously hindered Mojang’s creativity, it feels like they’re scraping the bottom of the barrel and we haven’t had a meaningful update since 1.16
I feel like the beds are so simple that they don’t really count.
Most furniture mods are super detailed but the bed is just a rectangle.
Also, furniture would shoehorn you into a few set styles. Should the chairs be wood chairs, stools, small sofas, benches, etc.? There’s too many styles to add them all.
The bed is simple enough that when you make a bed you usually decorate it with other blocks to get the specific style of bed you want.
I think a good compromise would be some half-bed type slabs that work as seats but are just cushioned slabs you can spice up with other blocks to make the chair you want.