This seems like an odd argument. Are uBlock's incentives unaligned with yours because they didn't release their adblocker earlier? What does the timing of the release have to do with anything?
> If that were the case I would be able to completely opt out of tracking and accept slightly less targeted ads
You can opt out of tracking and ad targeting
Not really a fair comparison - uBlock aren't selling ads. Google are and have been for a decade. There have been many occasions that search has been compromised via advertising from the days of SERPs being mostly adsense mini sites years ago. The response to those also took years despite search being near ruined. Google could have done far more far sooner.