im a kin whos okay with doubles but im kinda new and im curious as to why some kin arent okay with doubles?

Some kin experience anxiety around doubles, and feelings of being fake, even if they know there can legitimately be more than one of a kintype. Often this is due to anxiety, self-esteem issues, or mental illness. It sucks when you’re doubles with someone who doesn’t want you following them, but its best to respect their wishes.