This gets back to the original intent of the EV credit as its per-manufacturer limits seems to encourage manufacturers to invest in EV production. The Electric CARS Act effectively converts it to encourage consumers of all income levels to buy EVs. Perhaps the original credit intent isn't as necessary anymore as manufacturers are indeed making EVs now, so we can avoid manufacturers capturing the credit for themselves. Unclear if potential buyers would still "need" the credit as you suggest competition should drive down prices while improving value, but removing the credit also has a bad image of "EV credit was mainly available to the rich and is taken away when the rest could start using it."
To your other point about charging infrastructure, yes it would be great to get that as well. Charging up on Mt. Rainier for several hours should get back ~100 miles, which should then be enough to reach a Level 3 charger especially when going downhill. Although it would seem like there would need to be many charging stations for popular destinations as it would be quite unfortunate for those who really "need" to charge to leave.
Yes, eventually there will need to be a number of chargers at those locations unless things change on the route up there. If we have slightly longer range (say 100 to 125kWh batteries in something the size of a 3 or Y and more locations of fast chargers (so maybe one at the base of the mountain rather than 75 miles away or something) you likely wouldn't need to charge while up on the hill. For the near term though (5 years or so) I think having a number of level two chargers at these areas would be a huge benefit to making EVs more available to the general public. I've already seen a couple areas where it would push my LR model Y to get there and back to a fast charger. Take a family that doesn't care about doing the math, adding a safe buffer for range loss while parked, etc and this is still a pinch point where they'll rather buy a $38k gas SUV or something so they "don't have to worry about road tripping with the kids in the summer."
Right now we probably could get away with 10 to 20 level 2 chargers at the main locations and maybe 8 to 10 at less frequented places.
The other huge issue is reliability and ease of use. Again I watched a youtube review video just published the other night on a MachE first edition and again they had trouble at an EA station. They had two or three errors; it worked, but required trying two or three stalls and plugging/unplugging a few times. This is from a channel that seems to want to promote the EA network just as much as the Tesla network and is extremely pro-EV, even non Tesla ones. If you were thinking of dropping $40k on a family car and were watching youtube to figure out if your wife and child would be disrupted by you owning an EV or not and every youtube video you watched the charger gave you issues, required moving cars, maybe required calling in to start the charge, etc, would you buy the EV?
We've had a few years of 3rd parties trying their "best" and industry standards. Now I think it's time government stepped in and created a frame work. I don't want them regulating Tesla of a private company that's building out a network, but they could come up with a baseline speed (150kW or 250kW), a connector (CCS), one industry standard handshake between charger and car, and credit card swipe and app API (so can be integrated into other public apps), and then put out a request for private companies to bid on doing the work. Likely these stations will have a lot of overlap with the market (most cars support CCS or could with an adapter). Potentially rather then building from popular to infrequent these government funded stations should work in the opposite way; stations on rural roads, state routes rather than interstates, routes towards national parks, coastal areas, winter activities areas, etc.
I still personally wouldn't recommend a non-Tesla EV to any of my friends unless they could afford it just as a second car that they didn't care if they didn't do road trips in. Not because I don't think they CAN'T do road trips, but that you have more stress doing them or more hassle compared to a gas car. It's still a big deal.
ATMs and vending machines and a number of other point of sale locations work dang near perfect all the time, I can't figure out why there are so many issues with chargers STILL.