Butter vs. margarine

I'm a bit baffled and conflicted here cause when I look onto research from organisations, news websites Wikipedia etc they all seem to suggest margarine is more healthy due to less saturated fat and better macro profile. But when I look onto bodybuilders and influencers as well as people on Reddit/YouTube too they all say butter because it isn't ultra processed junk like margarine.

So it's a bit confusing cause so many places are saying the complete opposite stuff.