I'm not sure this is true anymore. Check out the attached screenshot of Electrify America's map of DC charging. The few locations I clicked had rates between 75-350 kW. There's the issue of quality but I was surprised by the coverage so far.
Locate a charger | Electrify America
View attachment 450797
You may find the coverage for CCS to be "surprising", but that is not the same as "good". Compare even just visually to the Tesla map. I see nothing in WV and only a few in the southern end of MS and Alabama. I drove from near Knoxville to New Orleans and on to Houston once. I don't think I could do that on the EA map without going far out of my way.
The route I typically run weekly passes two Tesla chargers, one super and one urban. A new supercharger is being built near my destination. The same route has exactly NONE of the faster CCS chargers with two chargers along the way that are just 50 kW. At least I assume they are 50 kW. Plugshare doesn't actually say what they are.
That's another factor in driving any other EV, the lack of integrated support for finding, using and paying for charging. In my Tesla I wanted to use a 1776 charger at a hotel. They had an 800 number and the charger was supposed to be free to use. But because I didn't have a card for that brand and the 800 number couldn't turn it on remotely due to the arrangement with the hotel, I couldn't charge.
Tesla has it's faults, but they understood very early on the need to provide an integrated charging solution. This will be a key factor for at least five more years. Would you buy a car that used a special fuel you can only have delivered to your home or obtain at special facilities run by many different companies with different rules for payment and located in who knows where? Neither will the rest of the public.