I don't know if we'll ever know why Woojin left.
But here's a wild theory (that I'm sure I'm not the first person to posit): some skz members seem, uh, a bit queer sometimes.
If some of them are genuinely queer, and someone in the group isn't as comfortable with queerness, that might be a motivating factor in why they left.
Something I noticed yesterday when watching the very last livestream in which Woojin appears: I.N says: "Stray Kids' color is rainbow!" Bang Chan repeats his words. Woojin also cheers for rainbow. It's a bit awkward, and then someone changes the subject.
I don't think they're necessarily using "rainbow" as code for "queer" but I don't think it's out of the question either.
https://youtu.be/I2KojBj18BU?t=290
#skzLivestream #skzExMember