Sure kids get bullied, that's the default. But why add such a strong factor willingly? That's what I don't get. I can only imagine the fucking hate some of the parents would be spitting out and obviously their kids would take it to school. So that kid would not only get bullied for any of the reasons you mentioned, they'd have their parents sexual orientation added on top.

Also, that last argument doesn't hold up in Poland. There are more couples wanting to adopt than children up for adoption. My close friends, unable to conceive, waited for over three years. The only children in the system are those in a middle of s legal battle that cannot be adopted until that battle is resolved. So it's not "orphan" vs "adopted by a LGBTQ couple", it's adopted by a cishet couple vs LGBTQ couple, and the latter definitely would seem like getting the short straw given current social context.