Some functionalites are broken, for example some settings in the settings panel wont display, because it’s a react ui (mostly everything related to onedrive/online account), lots of software expect it to be present and use it (like visual studio). Git (to connect with oauth).
But a lot of things still works.

Well you can still uninstall edge on windows, even if it break your system, you can do it. There are tons of guides you can find on internet. It’s basically running the installer with an uninstall flag.