It's like the nuclear fans or anti-recycling groups that keep talking about how bad coal is.
We know. We can eat less sugar and less meat.
But the same places that published climate denial will attack any attempt to eat less meat or less sugar, probably pointing to the other one as the real villain.
Note that a current controversy is about reducing the sugar limit from 10% to 6% to better follow the science.
Which side does this evidence-based nutrition campaigner take? They don't mention it at all? Probably not relevant for their pro-meat interests except as an occasional scapegoat.