SciAm has of course fallen into terrible disrepair. But that happened long ago and the cause wasn't BS in the editorials. Who even reads editorials in a science magazine?
I was a Young Libertarian in my day and I recognize the urge to blame lunatics who disagree with my politics for everything wrong in the world. But this particular case isn't convincing. It died and then the loonies moved in, not the other way around.