In May, the House Energy and Commerce Committee voted 48-1 in favor of the Sunshine Protection Act. The U.S. Senate voted unanimously in March 2022 to make daylight saving time permanent but the House never took up the measure in the face of opposition. The proposal the House will consider next week would allow states to opt out.
Great point. From a quick websearch it looks like every state is allowed to exempt itself. The few states that opted out did so right near the creation of the daylight saving time law.
I think maybe it comes down to inertia and staying in the herd. No state wants to be the first one to stick their neck out and make a change from the rest of the country all still doing the status quo.