>>126486559The only Chris-Chan related joke in the entire episode was Mark’s painting having tan arms, aside from that he’s a pretty typical overly-obsessed fan archetype.
And just because Chris fits that mold pretty well doesn’t mean he created the trope.
If they were actually railing on Chris-Chan, they’d have had Mark do an obvious parody of Sonichu, or have a scene where he makes an internet video ranting at the camera in an animated fashion. Hell even a Sonic medallion would have been a more clear Chris joke.
Besides one line (that the show made jokes about already), Mark has no real similarities to Chris-Chan at all.