[camillomiller]

What about simply Functionalism?

Brutalism is indeed overused and has a clear meaning for architecture that really do not overlap with these "guidelines"

[fsckboy]

but the word brutalism is just too delicious to let the architects have it for a style they've moved on from based on a building material that's so specific to buildings. It's like modernism, there's always a new modern.

and I'm not joking, I think the word brutalist is so attractive to people that it begs to be recolonized regardless of the narrow context in which it once thrived.

[mcdonje]

I like your thinking, but there could be confusion if used imprecisely. Namely, people might think it's a website that isn't broken (this could be seen as a benefit for the playfully opinionated), or a website made primarily with functional languages/programming style.

I suppose you'd have to refer to a site as Functionalist.

[camillomiller]

Well I was thinking Functional Minimalism, but that's already not very minimalistic to have two words to define the category :)