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.
Read up here:
https://github.com/uBlockOrigin/uBOL-home/wiki/Frequently-as...
With v3, extensions have to predefine the rules for blocking. Which is the limiting factor
And there's a limit of 5000 such rules.
"Based on input from the extension community, we also increased the number of rulesets for declarativeNetRequest, allowing extensions to bundle up to 330,000 static rules and dynamically add a further 30,000." https://blog.chromium.org/2024/05/manifest-v2-phase-out-begi....