Well, Kate has been around as an KDE based advanced text editor for nearly 2 decades now - its base feature set isn't too different from a base VS Code installation. And there's also KDevelop as a more full featured IDE.
It's a good point, and in fact I went and looked at the original announcement of VS Code and it appears that Microsoft didn't credit Chromium or Electron back then either. I guess big companies are allergic to crediting other big companies.
> given how many other companies have "created browsers" that are just Chromium forks and rubbed Google the wrong way
Has there been any indication that these folks are "rubbing Google the wrong way"? I think Chromium, as a project, is actually very happy that more people are using their engine.
The intro checklist for Antigravity includes watching VS Code tutorials!