I don't love playing fast and loose on a particular paper, but (1) I don't fault them for not wanting climate skeptics to be able to launder the prestige of being published in the IPCC to lend credibility denier narratives, (2) nothing about this changes the IPCC conclusion or the underlying reality of global warming and (3) if all you present is this one-off without context, it serves to spread the false impression that climate science writ large is uncertain.
Spreading that form of uncertainty without the benefit of context serves the purpose of spreading misinformation. That's the topline, and losing track of that topline is a failure in media literacy.