While I personally think these videos belong on Youtube, I somehow found myself sitting through this entire thing. So, maybe I am in the wrong there.
My take on the issue, and following up on similar things pointed out in the last 2 minutes of the video. Is people interjecting cringy fan content and shattering your perfect/pure perspective of what you are are worshiping/hating. I personally think Undertale fandom became toxic just because of all the creepy obsessions that revolved around the characters. I'd elaborate but this ain't the place for that.
Despite the basic artwork, the quality in the presentation and relevant personal stories you and your friend put into this redeemed it. Good job.