>Going by your argument, a one-line black-on-beige text message saying "Sponsored by: $COMPANY_NAMES" is "crap".
Yes. At best it's tolerable crap.
>To me, saying who's paying for work is as much a matter of giving proper credit and fully disclosing where the money is coming from.
There's a difference between disclosure and advertisement. The latter has the notion that the information should literally be advertised, that is, thrust upon the viewer. I don't care that a paper cites collaborators or donors, I just don't want it to be done in such a way that pollutes my experience of the content. That's a crucial distinction.
>Personally, as an EasyList user, I'm a bit surprised that EasyList has a site-specific rule to block this particular "Sponsored by" message.
As an EasyList user, I'm considering making a donation precisely because they do this. Again: ad-blockers are about improving the signal-to-noise ratio on a site and preserving my attentional resources. Ad-blockers aren't about blocking ads, per se.