The ways most sites utilize AJAX and JS, there is just no consistent way to block "tracking calls" vs. blocking requests needed for particular pieces of functionality and data.
At some point, browsers will gain firewalls and packet inspection and filtering capabilities.
We should be able to inspect the data sites are sending and receiving asynchronously via Javascript. We should be able to automatically delete or redact private information from JSON payloads. What if uBlock Origin could automatically anonymize unique identifiers that some Javascript code is trying to exfiltrate?
This will always be a cat and mouse issue, and unfortunately right now most of the authority is on the server side. The data-driven web that TimBL envisions is just not profitable enough and content has to be heavily intertwined with distractions and trackers to monetise us cattle. See RSS.
I also close the tab if I'm presented with a paywall, a modal newsletter subscription prompt, impossible cookie banners, etc.
I think of it as a "the medium is the message" type of thing, and if the medium is tainted then the message can't be any better, so why read it?