EDIT ---
Ok, I get it now. Personalized ads = surveillance. Fair enough.
Doesn't the whole GDPR already cover it though? You can opt out of the surveillance.
It's the whole tracking, data-gathering, and trying to optimize for squeezing the last bit of revenue out of people that I dislike.
That and the stupid amount of bandwidth and compute caused by the ad scripts on every other website. ublock makes the web so much faster, it's hard to believe.
EDIT:
I'm actually subscribed to some e-mail newsletters from certain brands/sectors that I care about, and they regularly deliver personalised ads to a subfolder in my e-mail account. I sometimes even buy things as a result. I don't mind this, because it's opt-in and by consent.
I do mind when facebook tries to infer what kinds of things I might like, which it's generally terrible at and the various "ad preferences" I can set don't seem to make any change.