I dont think so. since we are in internet age, they can find another bl with internet... unless you want them die socially
well if you're a writter and an artist you could break the L on BL by changing the story into one where a girl destroys their relationship or make them stab each other in a gruesome way. Then when they read those BL characters they will reject them and slowly drop BL
You're not in the right place to be posting logical and intelligent posts. You'll never get likes like this!~
As a woman I think it's not an effective approach. You know, a lot of women are used to close, intimate friendships which each other and skinship. Most of them aren't as oversensitive about their sexuality as men. For example, do you know any woman that uses a phrase 'no homo' to justify her actions towards a female friend? That's why I thing that fujoshis wouldn't care about your shipping, sorry not sorry
I only see one or two anime where the fujoshi got beat. One fujoshi draw a pair and show it to another one. The other one got mad because the one she ship is her love interest. So ship their love interest to another guy.