I don't think that's what Google is trying to advertise with this, the threat model is "I don't want google having 10+ years of my browsing history in case they are compromised or some G employee goes looking through my history". My point is that it isn't misleading, of course they're not going to intentionally harm their Ad business unless you really go though the trouble: https://youtu.be/NQ6-DP6DIiU