Sure, and yet virtually no one doomscrolls 10 minute videos. And even the “longer” videos in the scroll - meaning 15+ seconds, which nobody watches to finish anyways - have virtually no content, being just someone making stupid motions or reading out a text message.
That is, TikTok is as if an AI got tasked to turn meaningless tweets into portrait format videos. It’s a facsimile of video content. As if the creator only knew about what videos are based on the wikipedia entry for it or something.