The Google Cloud Console is the most notable Google service built with Angular and my experience is that's one of the best advertisements for
not using Angular. If even Google engineers theoretically just offices away from the Angular team can't make a performant Angular app, who can?
The Angular Team act like it's a great feature that they don't give "special" support to in-house dogfooding teams, but that just leaves as much an impression that they'd rather just support everyone equally bad. Sure "no special support" sounds great on paper, but it certainly looks like "no support at all" from where I'm standing.
Some Angular proponents will also make excuses that the Google Cloud Console is an amalgamation of components and pages owned by a variety of different teams, like that's a unique situation to Google that no one else deals with bureaucratic scale like that. I guess they haven't experienced much other enterprise development, because that is very common in my experience. If they aren't building Angular for multi-team enterprise applications, what exactly are they building it for? (They are certainly advertising Angular as great for those, even if they are using it as an excuse for why Angular isn't performing well in Google's own usage of Angular.)