$HERE the anti-processed proponents seem to be mostly pro-butter folks. Getting premature deaths down in the eighties and nineties caused by saturated "natural" fats took a lot of effort and these useful idiots are undoing much of that work.
YMMV.
YMMV.
What? Are you talking about trans fats?
Since mid-1990s, margarine no longer contains appreciable amounts of trans fats.
Butter also contains trans fats but these are ruminant TFAs which I understand are not so bad.
This is why despite butter composition being worse "on paper" there is no empirical observation that it is less healthy than plant margarine.