Took the words right out of my mouth. Take my downvote.

Yes, although your comment seems to me to be correct, it misses the point of the question, and the actual question has been answered quite well already by others. Surely the format is not in and of itself toxic, and I personally find it a little strange to think of a format as toxic, though I suppose one could create such a format. Rather, the question is weather the format of the website encourages or indues so called "toxic" behavior or leads to the perception there of, among groups of humans using software in the format in question. Maybe because "yearning for affirmation" is a near universal human trait and the format of the site provides its human users access to a convenient but unreliable metric by which they may measure the approval of their peers. Some of us suppress this drive for approval with to strong self awareness or self esteem or lack it entirely due to mental illness, but it is in almost every human, and of course, our need for approval is of course a double edged blade. It makes society possible, and makes us hate to take part at times.