Your puny 120kW is fine for you and it's fine for most people, but you have to understand that flash charging isn't about the consumer demand, and it's not about road trips. It's happening way faster for that to be the case. Flash charging is about making more money for charge point operators and the car companies.
There are two reasons for hyper-fast charging, and neither one is for road trips:
1) People who live in apartments. If your car has 5-minute charging, you can sell EVs to more of these people.
2) Charge point operators. Charge point operators make a lot more money off of faster chargers than they do off of slow chargers. The economics of running a charging site strongly favor faster charging. Faster charging means fewer stalls needed, less land and queuing space needed, more people stopping because it's more convenient, more people stopping because there's less chance of a queue. Since you charge money per kWh, basically the rate you can make money off of charging is directly proportional to how many Watts you can push out. And it's more economical to push more Watts with flash charging.
In the early days, I expected companies to charge more money for faster chargers. I expected there would be slower chargers, fast chargers, and "premium" hyper chargers that cost more. But in fact, it's going to be the opposite. We will probably see lower rates for faster charging. In fact, this already exists now...some chargers begin charging idle fees once your car gets to 80% and starts charging slower. You pay more, if you want to charge slower!
This is why flash charging is being pushed so hard. It's profit incentive both for the car companies and for the charging companies, not value added to most customers.
Hyper charging is emphatically not needed for road trips. This is why Teslas still charge slow as fuck. Tesla charging speed has actually gotten worse over time. It's because their customers live in America, they tend to own houses and charge at home, and even "slow" fast charging is totally fine for road trips already. That's why Tesla "super"chargers are not even fast. Because for road trips, which is the Supercharger use-case, it doesn't matter that much.
I have two gas cars and an old Kia Niro that charges at 80kW on a good day. I need to drive between Boise and Portland every so often. Most people assume I drive the electric around town, and take one of the gas cars to Portland, but it's the opposite. I only drive my gas cars around town, because the miles are low and gas consumption is basically insignificant. I take the Kia on road trips because it's slightly cheaper (I get the same reimbursement from work) and electric cars are nicer to drive. I just put it on cruise, and it climbs all the mountains with no shifting, no noise, and it goes down the other side perfectly in cruise control, no brakes needed, just put it in cruise and drive.
Even though it charges at a pathetic 80kW, I never really wait on the car. I just plug in when I stop for pee/coffee/cleaning off bugs from the windshield breaks. I probably spend less time charging the Kia than I would filling up a gas car once or twice, because I don't have to stay with the car while filling gas. And that's at a "pathetic" 80kW car. I now understand why American car companies keep putting out cars like the Equinox, that only charges at 150kW, or the Toyotas, that also charge at less than 200kW. I used to think the 250+kW charging speed like the Hyundai's was going to be some big unlock. But now I realize it doesn't matter because most Americans that can afford newer cars live in houses, and we are already at the zero-time-cost point for road-trip charging. The next bottleneck will be when enough people start using EVs that queues start to form at the highway fast chargers, and since land is cheap in America, the response will probably more like what Tesla already does...just put in a fuck ton of stalls so people can charge while they pee, rather than a few hyperchargers that people have to keep moving their cars through.