> For me, the problem with your remark is that it's proposing some kind of alteration of message (lying, in essence) by "a group" which is not really identified, but might be "climate scientists" - but with no actual evidence.

So you disagree with the grandparent post's statement that "But it seems this fact is usually omitted so as not to complicate the intended message."?

There are plenty of large, prominent climate activist groups making prominent public statements. I've never heard a single one of them discuss this aspect. (Contrast with scientific papers, many of which do mention it and which are not what we were talking about).