Look up in an old city, look at the facades of the buildings. They have quirks, uniqueness, it makes the city almost a living thing. Every time we shave off another edge we lose that. Nevermind the fact that shoehorning everything into the same patterns is actually an antipattern and very good paradigms have been invented after the 90s.
It's not perfect, but I'd rather have a bit of a mess than boring emptiness.
(Same for car interior design, or things like even doors that some swivels on one axis, some split on multiple, some slide.)
I don't think that us humans really actually like/want standarts. We think we do, but there are 100+1+1 standart from which to choose. So Claude becoming "standart" iš just +1 standart to choose from. Unique is fun!