Over on LessWrong, the phrase is more common, but the tophits are multiple posts that specifically argue against the phrase in the abstract. So overall I would not consider it an isolated demand for rigor if someone were to argue against the phrase “no evidence” on either forum.
Minor, but: searching on the EA Forum, your post and Quentin Pope’s post are the only posts with the exact phrase “no evidence” (EDIT: in the title, which weakens my point significantly but it still holds) The closest other match on the first page is There is little (good) evidence that aid systematically harms political institutions, which to my eyes seem substantially more caveated.
Over on LessWrong, the phrase is more common, but the top hits are multiple posts that specifically argue against the phrase in the abstract. So overall I would not consider it an isolated demand for rigor if someone were to argue against the phrase “no evidence” on either forum.