You would go for a Raspberry Pi when you need something it was invented for.
Putting a computer on your motorcycle or robot or solar powered RV. Super small space or low-low power availability things, or direct GPIO control.
A MiniMicro will run laps around a Pi for general compute, but you can’t run it off a cell phone battery pack. People only related Pis to general compute because of the push to sell them as affordable school computers, not because they were awesome at it, because they were cheap and just barely enough.
Gas stations attached mechanic shops and then convenience stores even though you don’t spend a lot of time refueling.
Charging centers simply need to do the same. Or restaurants etc need to invest in charging stations.
If you go on a long trip and need to charge, and you can spend that time also meeting your personal needs for food and bathroom? By the time you finish a meal at the attached full service restaurant both your car and passengers will be fully refueled.
Even though I don’t personally own an EV, just a hybrid, that much became obvious as soon as my local grocery added a couple charging spots. Only a couple, but it’s so obvious the answer to long charging times is simply to have something else to do.