I use Edge on my work computer since I can log into it with enterprise SSO and store my passwords and bookmarks to my work account. Not ideal, but I don't do anything personal on my work computer because I already have zero expectation of privacy on it anyway.
Vertical Tabs are an absolute game-changer, especially combined with tab groups. I can actually juggle hundreds of tabs in a single browser window without issue. It's the only thing I can say that Edge got right.
I've been waiting for this development for a long time. I can't wait to have this functionality on my personal computer, on a privacy-respecting FOSS browser no less. The extensions currently available for this are just not that great, it has to be a native feature.