I think those websites are over using trackers in their websites for extra profit with no care for the privacy of their users, I highly recommend avoiding them.
For comparsion:
weird, I don’t get any ads with uBlock Origin. none on my RSS feed, either.
theguardian.com works just fine without allowing javascript to run at all, and don’t seem to load the trackers if you deny cookies. I did get a page popup where they pleaded but didn’t force me to subscribe if I allowed the optout domain to run javascript.
Worse than Sky!?
I can only guess that Comcast run their own tracking across all of their properties. That might be true of a the rest of them as well. It’s hard to tell from this who’s worse.
The only real solution is to just block all trackers and third-party cookies.