> I'm sure I've read that sleep health experts have historically supported a change to permanent Standard Time, not DST.

Yes, science is very clear: Permanent standard time is best for health.

https://journals.sagepub.com/doi/full/10.1177/07487304198541...

https://srbr.org/advocacy/daylight-saving-time-presskit/

https://esrs.eu/wp-content/uploads/2019/03/To_the_EU_Commiss...

https://www.ama-assn.org/press-center/press-releases/ama-cal...

https://jcsm.aasm.org/doi/10.5664/jcsm.10898

https://onlinelibrary.wiley.com/doi/10.1111/jsr.14352

https://www.chronobiocanada.com/official-statements

But I think the scientists have made a mistake in their communication: They focused too much arguing against the clock-shifts, and didn't put enough effort to communicate why also permanent DST is a bad choice.