Or (being devil’s advocate here): just don’t be a fucking slut. Have like 3 partners and have ypur website pick the best offer dynamically, it’s not that hard. In the end they all use AdSense, so they don’t even need to give data to the other 873 or even Google itself - as you said ads don’t have to be targeted. Although it’s not as if it won’t get there anyway.
Lemmy isn’t a single website like reddit.com is. It’s rather a collection of decentralised servers (“instances”) offering the same service (one very similar to reddit). It’s often compared to e-mail - just as Gmail users can talk to Outlook users, lemmy.world users can post and comment on lemmy.ml from their home instance.
What this does is it removes the centralised aspects of Reddit - if a community has powertripping mods one can make an alternate community (like on Reddit). But this goes a step above - powertripping server admins can be reigned in by simply switching instances.
Sorry to bother you, but how do you check/block scripts? Personally I use Firefox with uBO and Noscript, but noscript seems pretty rudimentary since it only lets you block domains. Me not knowing what the various per-domain toggles mean doesn’t help either.