My understanding from Brave is that this year Google is essentially disabling v2 add-ons, but the code will still be in Chromium (for other things Google does),

My understanding from Brave is that this year Google is essentially disabling v2 add-ons, but the code will still be in Chromium (for other things Google does), so Brave can just re-enable it. But Brave expects that Google will actually pull the code out of Chromium next year -- when that happens, it is unlikely anyone else will have the time to maintain patches to put it back in.