The simple fact there is such resistance to it should be a fairly obvious indicator. Throw in the normal increase taunting etc normal in schoolyards and that is magnified.
In principle, I actually would agree, but in practice this is something very different than an adult coming out of the closet and getting married, or becoming life partners where that is not possible. This is taking a child and forcing them to bear the backlash from their decision, whether that backlash is justified or not.
Of course in communities where alternative lifestyles are commonplace and accepted it's going to be fairly easy, but at this point and time those are the exception rather than the rule.