Your destination destination charging point experience is definitely different from our road trips in CA CO NV & UT. Only ONE of the multiple destination HPWCs actually had > 40A / 240V charging... ALL the others were either 30A or 40A.
How many did you visit? I doubt you could click on the destination chargers in "CA CO NV & UT" and only have one pop up with 16 kW. When I click on them randomly, at least half are 16 kW.
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We have a lot of 80 amp HPWC's and 70 amp Sun Country EVSEs here, including 2 80 amp HPWC's at a gardening store just up the road from me:
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Could be my optimized planning using EVTripPlanner and Tesla Winds + Tesla navigation enroute which has made destination charging mostly unnecessary for us, even traveling in EV charging "deserts" like Monument Valley.
Here's what I like about my dual 40 amp chargers.
1. When I travel, if I pick a hotel with an 80 amp HPWC (and there are many if you click on the link I posted above despite what some say) I can arrive at the hotel with a low charge, unpack, shower, etc. and pick up enough miles for a night out on the town, then return later and charge full up for my travels in the morning. Now, I wouldn't need 80 amps for overnight, but for getting the charge needed for the night out they are a must have -- 40 or 42 amps won't cut it. Alternatively, I could have gone to the superchargers, perhaps out of the way, and hang around and wait for the charge. I'd prefer not to while travelling, if I can avoid it, and dual chargers allow for that.
2. I can drive to my cabin in the morning, cut the lawn and do whatever else is needed, and return home in the evening. 40 amps would mean I have to stay overnight or arrive home really late.
3. At home, I dial down my 80 amp HPWC to 42 amps. That means each charger only has to supply 21 amps rather than 40. You can actually watch the chargers ramp up to 21 amps, pause, then switch chargers. The chargers are liquid cooled and a high wear item. There's threads about charger failures and replacements here. I plan to keep my vehicle for a while so the less wear the better. Dialling one charger down to 21 amps is just too slow.
To each their own -- but for me the 80 amps was more than worth the cost. I don't like the fact that when I upgrade the maximum will be 72 amps.