Because they're "digital artists"/"glitch artists" and the conventional formats for sharing knowledge are too boring for their ADHD and/or won't get them the same kudos as social media posts...
I feel like I kind of understand why they did it, it seems to come from a conference of some sort (Twitter doesn't want to show me the context) and conference videos tend to get buried on normal video sharing platforms. On Twitter you can get a wider audience by being incendiary, so perhaps it was just a way to get a wider reach...
I still don't know why anyone would wanna watch anything longer than 10 seconds on Twitter though... :)