I think the headcanon about aspects being bound to certain moons was because all space players we have seen are prospit bound and all time players are derse bound

That is true, and those two being sort of rather relevant Aspects to SBURB, I could see the headcanon, but not ALL Aspects! Like, Rose’s Light and Derse, Vriska’s Light and Prospit. Eridan is Hope and Derse, Jake’s Hope and Prospit.