I don't believe this was a good call. The title was accurate before, and the meaning of the submission has been substantively changed. Now it uses the title of the site - something we're explicitly asked not to do as part of the HN Guidelines.
As a reader, there's a real difference between deciding to upvote the original title (an observer's description of an inherently deceptive project) versus casting a vote on what it's been changed to (a brand name used to promote that project). I would absolutely upvote an article critical of The Spinner - while at the same time, I'd downvote a promotional submission.
OP did not intend to advertise The Spinner, they intended to expose it as a deceptive project without linking to third-party press coverage. The submission title absolutely matters.
If this changes your mind, please go with the original again.
This is a pretty rare case. I'd say the commenters made it abundantly clear that the project is not to be taken at face value, so in a way the title is not so important. Upvoting the submission doesn't mean you support what the site is saying or doing. It's more that you think it deserves attention, relative to the other articles that are in play that day.
I referred to "if the title includes the name of the site, please take it out, because the site name will be displayed after the link" but I get that this may apply in particular to "Washington Post: " etc.
Point about importance vs. endorsement is well taken; I would rather not give any publicity to this project without couching it in explicit criticism, but that's a personal choice.