They do have an opinion section, like many journalism outlets, which sort of by definition have to be 'hot takes' (e.g. you don't publish opinion pieces that 99% of people will already agree with). Out of thousands it is seems hard to avoid having some bad ones (all major outlets seem to have opinion pieces that are dumb). Most of the flack they get seems to be from these dumb pieces, and it is sad that the entire brand gets tarred with it. You could argue that SA just shouldn't have opinion pieces at all, but ultimately opinion pieces are pretty good at drawing readers and SA is not a non-profit. Additionally, while there are some that overstep the research and are 'click-baity', some opinion pieces are thought-provoking in a valuable way. Nonetheless, perhaps it would be better to get rid of the opinions just to avoid hurting the reputation of the rest of the magazine, but running a journalism magazine is a tough business and it is easy for commenters on the internet to pop in and say stuff like this who don't actually have to run a magazine. I would rather they exist with occasional bad opinion pieces than not exist at all, as their coverage in general is still great.
This guy seems to really not like their coverage of science around gender non-conforming individuals, though I don't see why I should trust his representation of the research over theirs as he seems to have an agenda as well. He then cherry-picks a few examples of some bad opinion pieces not written by their journalists that overstepped the research and then paints the entire outlet with it, and that is frustrating because most of the science coverage reporting is still excellent.