OnlyOneOf's concept is literally queer though? Ofc ppl are gonna call them gay. That's what they want, it gets them the attention they couldn't get before.
And for Sunoo, sis you ever heard of the glass closet? He has one foot out of it. Same for other ppl like Shinee Key, 2AM Jo Kwon, Nu'est Ren, AB6IX Daehwi, The Boyz Kevin, actor Yoo Ahin. When you are that flaming, ppl are absolutely gonna question it.
Personally, I don't think assuming is wrong unless it's causing problems. People usually just want representation and I don't see anything wrong with that unless you are invading into their actual personal lives or affecting their work somehow.