To be clear, I'm talking about the scenes where you feel something well up within you that has a very hostile reaction to Daisy, which possibly culminates in you trying to strangle her in your dream.
Noteworthy that Tav's dream sequence (as well as DU, presumably) has apparently been completely rewritten. Whether the new dreams hint at deeper story developments down the line for Tav is certainly up in the air, but I wouldn't be surprised if Tav's violent urges and lashing out at Daisy weren't around in the new dreams.
I don't think people would mind DU as much as the 'real' custom character story if there wasn't so much baggage. The 15 years as a serial killer in baldur's gate, for one. Having control taken out of your hands randomly and unpredictably even really early in the game. Honestly it doesn't sound too much fun even as an evil character if you don't like obligate murerhoboing and want to be something a little more subtle.
If I wasn't afraid that I'd be getting a truncated 'default' story playing Tav, I wouldn't touch DU with a ten foot pole. And the fact that by all indications Larian has given Tav no longer has any sort of 'Tav story' makes me feel that's kinda just the way things are.
'No story' vs 'serial killer' just doesn't sound that appealing a choice for a custom character in a game like this that otherwise sells itself heavily on its massive amount of unique story content (origin characters)