Practical, especially if you want to upload something from your PC to Instagram. Even now, when I want to use Teams in the browser, I can do so despite Microsoft's disabling, because I pretend to be on Edge. I noticed that the Chromium-based Edge is still missing and only the old one is available.

where is white list/black list domains? so, its only full switching for all sites?

GUI awesome, but ...(

Good

Easy to use. Facile et agréable utiliser.

the browser is now reflected as firefox 56 and google drive/site are complaining : not supported. after disable, it shows again firefox 92

I just tested your extension with this site: https://www.deviceinfo.me/ and surprise it's not that good.
Here is the response from the site "Supports real browser kernel detection even if the browser is spoofed, for: Firefox, Chrome, Edge, Internet Explorer, Safari, Opera, Konqueror."