I do think gpui needs a native input element (enough that I wrote one (https://github.com/zed-industries/zed/pull/43576) just before they stopped reviewing gpui prs) but outside of that I think it is pretty ok and cool that gpui just exports the tools to make whatever components you need.

I could see more components being shipped first party if the community took over gpui, or for some crazy reason a team was funded to develop gpui full time, but developing baseline components is an immense amount of work, both to create an maintain.

Buttons (any div can be a button), clipboard, scroll views (div, list, uniform_list) should all already be in gpui.