I'm more of a firefox person, but does this impact other chromium based browsers that have retained MV2? Eg, is there another repo for extensions beyond the chrome web store?

I'm wondering because my wife has a subscription to speechify (commercial text to speech app), and uses it to listen to online textbooks. It has recently pretty much stopped working properly (auto-reads headers, but not the main text of the book). I thought it might be due to MV3 and the extension no longer being able to parse the page properly.

I was about to try the chrome variants that haven't gone to MV2, but I guess this removal of MV2 exensions would mean that all MV2 browsers are now crippled..