Supporting anecdotal data point:for most use cases, single phase home charging is more than ample for an overnight charge.
We have two EV's (My model 3 and my wife's Peugeot e208 EV), I have one home charger, single phase, restrict charges to a 4 hour window overnight that offers me discounted charges, and that is still fine for us!
This whole "charging at home" thing was very new and the implications relatively unknown back when I bought my S in early 2013. Would I need fast turn-around to add range for unexpected events? Thus I opted for the twin on-board chargers. The Gen1's each could do 40A for a total of 80A charging when installed on a on a 100A circuit.
I've charged at >40A ONCE. In over a decade. And that was because I happened to be at a hotel that had an 80A capable J1772 charge station and I thought "Cool!" It meant my charge finished at 1am rather than 4am... so didn't really need it.
I had a 50A circuit free in my panel with an easy electrical run to my garage, so when I got my Tesla Wall Connector, I installed that, thinking I'd upgrade in the future. Never did.... 40A was fine. Actually I've dialed it back to 32A to try and avoid blowing charger fuses for the 4th time.
Given that newer cars use even less energy per mile driven, ostensibly reducing the amount of charging necessary for a given drive, I tend to agree that 240V/32A is adequate for the vast majority...