

You have to launch Chrome with this command-line argument:
--disable-features=ExtensionManifestV2Unsupported,ExtensionManifestV2Disabled
And then, I think you have to re-enable it with config flags as well:
chrome://flags/#extension-manifest-v2-deprecation-warning [Disabled]
chrome://flags/#extension-manifest-v2-deprecation-disabled [Disabled]
chrome://flags/#extension-manifest-v2-deprecation-unsupported [Disabled]
chrome://flags/#allow-legacy-mv2-extensions [Enabled]
I have not tried this personally, though.




They “get the job done,” perhaps even provably, but:
It’s less flexible for fighting anti-adblocking.
Hence, it’s more work for Adblock devs/listmakers to maintain.
You can see the UBO devs already complaining/stressing about it. Hence them recently dropping Facebook from their 1st-party lists because they’re tired of fighting paid devs, or increased reports of UBO Lite specific issues.
I think that’s Google’s real intent.
They aren’t trying to kill adblocking, just make it inconvenient enough so the vast majority don’t use it effectively. It’s a form of “soft” censorship, sort of.