Why is a 34x improvement in the rate of interventions not as impressive as it sounds?

I’m not even sure that Waymo number is still correct. They’re doing hundreds of thousands of paid rides per week, with no one in the front seat, so not sure what an “intervention” even means at that point. Maybe where the passenger needed help and called support? That’s 1000x better than needing to grab the wheel because your Tesla was about to drive into oncoming traffic or run over a kid in a wheelchair.