While true (you're not the first to suggest it, even), in the context of the other things they show, I think it is more likely to be an example of them not knowing which advertiser to pitch my eyeballs at, and less likely to be them identifying me as a member of this set.
I take poorly directed targeting advertisements as a performance indicator for how well my data privacy efforts are working. When the ad targeting has you dead to rights is when you need to worry.