It’s to be expected when almost every app is electron or some web wrapper, that all consistency is lost. The only way to get it back (kinda) is to avoid those apps.

But for a lot of use cases that's not possible anymore, that is, a lot of the applications using the OS' UI libraries are no longer maintained.

And a lot of people have to use the applications as supplied, e.g. Slack or Microsoft Teams. Which can be accessed via a web browser, sure, but dedicated apps for these are also nice because they have a dedicated spot in the app switchers.