There's some big stuff in AUR like the binary VS Code and Chrome, fwiw.
I'm on Kubuntu and I install VS Code using Microsoft's repo and Chrome using Google's repo. Also I do Wine and Docker using their own repos. I can't imagine VS Code or even Chrome being put into the mainstream Kubuntu/Ubuntu repos nor why such a burden should ever be shifted to Canonical.
I wouldn't those programs. You have the corresponding FOSS versions (code-oss and chromium) in the main repository. Chrome is basically spyware.