Who knows... 👀
There are some theories regarding who Kan is actually, but only dev knows the truth.
As for peeptube comments those are purely non-canon, as everyone on discord can request any type of comment, dev once in a while goes through them on stream and we all decide if it's 'yay' or 'nay'.
Previously there were comments from Kan, Kaede, running NPC enemies etc. but dev removed them for breaking 4th wall too much.
Cheers