According to them it’s because it was too useful overall:
It’s confusing as to why they spent time pre-12.0 explaining that interrupts weren’t going to be as relevant and then do this flip-flop on Demo.
I don’t even necessarily disagree that it’s too powerful - having two interrupts is strong (but fun) and a bit of an anomaly compared to other classes - just… where’s the long term vision for the combat?!