There are two kinds of advertising
1. Contextual
2. Targeted
Not to bury my point: contextual is the normal, good, fair, effective type of advertising. Targeted is the creepy, resource intensive, privacy invading, and, (?!?!?!!) not particularly effective type of advertising.
https://chriscoyier.net/2024/08/14/there-are-two-kinds-of-advertising/