If only gas stations marketed their pumps like that. 10 gallons of gas can come out in 1.5 minutes in a Prius resulting in a fill rate of (500 miles range * 40 fill-ups per hour) = 20k mph! We won't consider the time it takes for the next user to get in and put the hose in because Tesla doesn't either.
I am a fan of EV vehicles as well but the long range fill up story is still not good.
Also it is not true that the supercharger v3 charges at full rate until 80% [1]. The curve drops off quite a bit shortly after 20%. The other points you made, well I never disagreed with that. There are a lot of benefits to an EV, but one clear downside (at the moment) is the long trip charging. This is just a fact and not an indictment about EVs in general
[1] https://cleantechnica.com/files/2019/03/Tesla-Model-3-Long-R...
[0] https://www.quora.com/What-is-the-flow-rate-of-gasoline-stat...
600 mi at 10mi/hr is 10 hours, so probably ready for a break.
Also, it isn't a couple of hours at all. 10% to 90% charge in model 3 takes about 50 minutes using a V2 supercharger (the most ubiquitous one) and about 40 mins using a V3 supercharger.
And both take much faster to get to lower percentages, due to the charge rate curve looking more like a log(1/x) graph, with rapid charge rate at the beginning that slows down the more your car is charged.
I had the same kind of anxiety over charging too, but since getting an EV and doing multiple cross-state road trips in it and with just tons of daily usage, I found that worry to be unfounded.
If we did this in a Tesla, we would've had to stop far more times, or each stop would have to have been much longer. That's not great.