At this point, publishers should probably just accept that any tracking is unacceptable, so if they want people to pay (and therefore login), then they need to stop funneling data to ad networks and other PII aggregators.
I doubt anywhere near 26% block ads because of tracking. I doubt even 1% if users even understand what tracking means.
https://www.nytimes.com/2012/10/08/technology/most-americans...