I find it weird when people in queer circles, mainly aro/ace, treat certain concepts (e.g. microlabels) as something whose reality has to be proved and vouched for by some vague authority.
Is aegosexuality real? Is amatonormativity true? Has aphobia been recognized?
My answer to all of that is: Those words describe models of reality, and they are “true” as far as the people using them find that they accurately portray a facet of real life. You don’t need validation to use them.