On the contrary, the author gave plenty of indication. At least to my reading of it...
I really don't see how you can misinterpret that statement above as the author somehow being complicit in perpetuating incorrect (already debunked) information.
A SLOWDOWN in INCREASES (tho still increases), did indeed happen, but that is not even close to the same thing as saying a DECREASE in temperatures -- nor even a "pause," as in just staying the same! Also, using the phrase "known by some" generally (if lightly) alludes to the fact that it is a false assumption.
I don't want to nit pick with you here, since I think we both agree that it is indeed a false assumption & one that the league of fact-less deniers sucked up immediately for their own ridiculous purposes. But I simply didn't come away with the same misread about this author's intent or leanings (OR accidental omissions) that you seemed to.