At first it sounds insane that Google would do such a thing since while ad blocking is growing, enabling the feature natively especially by default would incredibly increase the number of ads blocked. My guess is, that where other blockers by default can easily block all google ads, Chrome blocker would not block Google Ads because it would classify them as acceptable. And Google would then hope that people would use…
This is why I'm not going back to Chrome and not going to stop using ad blocker extensions and the network wide ad-blocker at home.