Adblockers will still be allowed, they will just be crippled a lot. It will probably be the same as the adblocking situation on Safari.
If any 3rd party browser vendor wants to maintain a Chromium fork with Manifest V2, they can do so, but with the risk of code maintenance hell. They would also need an extension store for Manifest V2 extensions. Otherwise V2 extensions needs to be installed manually.
Browser vendors can also create their own separate ad blockers that aren't affected by the changes. For example Brave Shields, Vivaldi adblock, Opera adblock, etc.
Adblockers will still be allowed, they will just be crippled a lot. It will probably be the same as the adblocking situation on Safari.
If any 3rd party browser vendor wants to maintain a Chromium fork with Manifest V2, they can do so, but with the risk of code maintenance hell. They would also need an extension store for Manifest V2 extensions. Otherwise V2 extensions needs to be installed manually.
Browser vendors can also create their own separate ad blockers that aren't affected by the changes. For example Brave Shields, Vivaldi adblock, Opera adblock, etc.
At that point, move to Firefox based browsers
No reason to wait, firefox is great
I saw the writing on the wall when Google banned Adnauseam (adblocker that hides and clicks on ads) from their store with no viable reason.
They just did it, saw if there would be backlash (there wasn't), then went on about their business. Lol. Scumbags.
Integrating the ad blocker into the browser is probably a much easier solution that trying to maintain manifest V2 support.