"Begin disabling installed extensions still using Manifest V2 in Chrome stable"

For people that have somehow missed the story, manifest v3 removed support for certain powerful network apis, severly limiting ad-blockers capabilities. uBlock Origin will not work anymore without manifest v2 (there's a v3 compatible lite version of uBlock Origin).

I saw there is a manifest v3 ublock lite.

I don't understand why and how it would be less capable, and so far I have not read the details of how/why.

So far, it's just rumors to me.

I will keep using firefox anyway, but honestly I am still waiting for a clearer explanation.