It could be about optics. They might prefer people direct their anger at a random non-existent stranger for paying above face value than have them direct their anger at Stubhub.

That said, shifting blame for high prices isn't a new problem, so it's surprising the domains were all registered in the last 6 months.

Maybe it's a bigger project around market making and price optimization. I priced mine around 70% of the price of similar available tickets (since mine hadn't sold in the 3 weeks I had them listed) and they sold later that day.