>Since the 1980s, and possibly earlier, our electronic clocks have been building DST changes into the hardware.
Generations of electronics needs to be replaced first.
If that were true (and it isn't), anything made before 2007 would already be obsolete. That's when the most recent change to DST start/end dates was made. I have a couple of clocks which accommodate DST, but it's just a simple on/off switch.
Do you think they sell electronic clocks made specifically for Arizona, or other areas which don't use DST?