I don't know how you think allergies work but if it was actually an allergic reaction it probably went something like immune system encounters a foreign never seen before substance and overreacts. Alternatively he was just the unlucky guy who didn't clean his suit enough and breathed in more of it than the others.
Yes and no, I don't have an account but I also don't use the frontpage because why would I, it's empty. When you watch a video you still get the recommendations in the sidebar.
I think the main problem is that there isn't much besides politics and memes. Most communities that aren't politics seem to devolve into meme communities.
Honestly I think examples like this are counterproductive, the average man will never be considered for one of these positions, nor will the average woman. It is useless to get angry at such a situation as it only serves to engage people in the "gender war" which only serves to distract you from the real issues which are almost completely class issues. Instead of getting angry that some woman "took away" the job of some man who was "more deserving", you should get angry that that person is most likely getting paid a hundred times more than you and will cut your job in an attempt to make the company appear more profitable.
They're equally awful but in their own ways.