The fact that you are bringing them up proves that you engage somewhat with content related to them. There are plenty of right wing people who complain about AOC, and know a lot about her.
Something about know your enemy? Just because I disagree with them doesn’t mean I haven’t listened to the arguments. But I haven’t done it through my YouTube account for explicitly avoiding the pollution of my recommendations only to no avail.
They track EVERYTHING. They know how long you pause while scrolling and a Tate video comes up. They have cookies from other website you visit cross referenced by source IP