Windows 11 default desktop Chat/Teams widgets are Edge web views that eat up hundreds of MB of memory: https://archive.is/pyvEO
Edge also preloads in the background even if it's not the default browser: https://archive.md/AAjz4
Both links also detail how to disable these "features."
Almost every non-Chrome browser still uses Chromium
And the only holdout is busy firing engineers, and paying more $ to their SJW CEO that looks straight out of a meme.