yeah, we're waist-deep in the thicket of Subjectivity now, which is honestly what brought the whole "canon debate" to its current form anyway. "is this relevant to me?" "is this essential to me?" even if an author claims something to be true, full stop, no grayness, it doesn't stop an audience from simply ignoring it.
homestuck in particular has always mediated a kinda unique relationship between its fans and the work. i've never really seen a fanbase so quick to disregard something that happens, textually, just because they don't Want it to be true. maybe homestuck was always post-canon. maybe we're just figuring it out now.