Most people itt are doing a self deprecating comedy skit essentially or are blatantly just avatarfags. waifu is just a picture you use to identify eachother for conversation
they shun coomers despite that being the original idea of what a waifufag is. a pervert or a stan. the otaku with body pillows he has sex with instead of girlfriend

somewhere along the line it became haram to be the original idea probably by literally fags which infest these threads