If you define "bounds" by what he can get away with, probably correct. I still want to know what pressing need does this address?
Just my opinion, but I believe having a consistent standard of time is just as important as creating a consistent standard of currency- especially in the information age.
We all know the story of how the Bay of Pigs invasion was completely FUBAR due to a failure to account for DST. Now imagine that multiplied at the speed information is used now.
I think the pressing issue is several States have started all trying to go their own way. It was one thing when it was just Arizona, but when you have more and more doing their own thing, it could create chaos in time measurement for systems that rely on it.
Imagine this. You are a pilot of an airline flying across the Northeast, and several states decide to ditch DST while others stick to it. Flying across several States, like Delaware, Maryland, etc, your time calculations can impact navigation and even control tower hand-offs. You have so many technical resources using time as a baseline factor for operation, they all have to be calibrated for flying over different states, often within minutes of each other depending on the path.
It is an issue that has been a long time coming due to the progress of technology. It is based on when operations worked at the speed of sunrise versus the speed of data.