Earlier quoted context omitted.
Simply put, people don't love Edge as much as they love Chrome. The browser bundled with Windows 11 is naturally Edge, but users who use Chrome install Chrome of their own volition, so forcing them to open links in Edge is extremely annoying.
I don't use either chrome or edge but why would I use a clone instead of the real thing? I never understood why Microsoft thought cloning chrome was a good thing for adoption. Edge is just chrome now but with some annoying bloat like the coupon pop-ups and pay later scams.
Google started breaking pages as soon as it detected it was running on Edge and not Chrome. Simply changing the user-agent string magically repaired the pages. So MS gave up and forked Chrome.