I think it is fair that a holistic analysis of the legislation would make a lot of sense. I would be surprised to know that changing a saw from 150 to 450 would be a major change in its use. But, I could be convinced that it is not worth it.
I will note that is also taking at face value the cost of implementing the tech. In ways I don't know that I grant. I remember when adding a camera to a car's license plate was several hundred dollars of added cost. And I greatly regret not having one on my older vehicle. Mandating those was absolutely the correct choice. My hunch is when all saws have the tech, the cost of implementing will surprisingly shrink.