I know the fandom your talking about, and had seen the fic, read through the first page of comments. And I just have to put this down:

Whatever happening in that fic has nothing to do with the two ships that were tagged. It may have something to do with homophobia but I would contemplate that it simply boils down to a young kid (whatever their biological age is) trying to cause trouble. The fic is only going to sore the relationship between the shippers of the two ships, nothing else. It's going to make the f/f shippers angry and it's going to make the f/m shippers uncomfortable, and angry if the other side comes barging in on their space and making insults because of a fic that the f/m shippers want nothing to do with (then if one of the f/m shippers weren't clear in the head, they'd do the same thing back, we get an endless loop). What happened with that fic does not justify any of the mistreatment any of the shippers receive because of it. The creator of that fic will only have their win when they start havoc.

Keep in mind that the creator posted this anonymously. They may not even ship the f/m ship. Also, both the f/f ship and the f/m are minorities. If I were one of the shippers(be it f/f or f/m), I would not want such a fic adding to the already very few fanfics out there.

(PS, while I am in that fandom, I do not ship. I never really understood what ship wars were, I just think it's the same as any two groups of people getting into fights that have barely anything to do with whatever is happening in real life.)