What?
uBO absolutely helps against tracking. It is at least half of its reason for existing.
The two primary lists are an (1) an ad block list (2) an anti-tracking list.
And used in medium or hard mode uBO categorically blocks many methods of tracking.
But also, if you use Firefox, this is layered on top of Enhanced tracking protection, blocking of 3p tracking cookies, and total cookie protection (dfpi)
That’s true, but this feature doesn’t involve your browser tracking you or profiling you. It only relates to anttribution. And if you don’t trust that, it’s an easy 1-click opt out.
There is a good high level explainer here: https://andrewmoore.ca/blog/post/mozilla-ppa/