READ: https://www.pcgamer.com/big-changes-coming-to-chrome-may-kill-ad-blockers/
Manifest V2 specification will no longer be accepted on the web store as of January 17, 2022
MV2 plugins stop working Jan 2023.
Get your new MV2 plugins submitted soon, because the window is closing.
I sure hope they get the MV3 service worker problems sorted out before Jan 2023: https://www.indiehackers.com/post/reverting-to-manifest-v2-5e81658297
I was looking at MV3 today, and my extension SnipCSS is going to be a hell of an upgrade.
I have a lot of data in-memory while evaluating matched CSS rules, I extensively use DOM manipulation in the background script, and I rely on the rarely used DevTools protocol - and who knows how any of that works with a service worker. It's such a mess. I wish Google would delay the date or at least address the issues devs are running into.