I didn't look that far into it. At the end of the day, just avoid those particular updates in the Google Store and everyone should be good to go.Yes, but what does 'Core Services' do? Like I said, I haven't disabled it or rolled it back and I don't see ads.
I see people on Google Play complaining about it generating ads, but the version 2.1.2-320114979-f dated July 8, 2020 seems to be clean. The one on Google Play is the same version but dated August 31. I'm wondering if the earlier revision is clean.