There are a number of folks in this thread discounting how often one needs >48A charging. Very similarly, there were those int he Model X Seats threads downplaying how often one really needed to fold down the second row of seats.
What such arguments fail to account for is that the impact a given feature depends not only on frequency of usage, but the criticality of each usage. Examples (for my circumstances):
That's not a good arguement though. It's only impactful for a single person.
Now assuming the Founders is different than all future MX's (unlikely), the simple fact of the matter is that Tesla had to make some sort of compromise in place of dual chargers or a higher single charger. Just like how the HEPA filter cut down on frunk length (most likely), some other compromise was needed if the charger is weaker.
Are your situations impactful? Sure. But the impact for the overall average person is much, much less than the hundreds of thousands of super-wealthy Chinese who already pay arm and leg for clean breathable air.
Are no folding seats impactful? Sure. But the number of people impacted by this is far less than a much larger number of wealth individuals who buy the ultimate people movers and don't haul dirty plywood around in their CUV, or if they do have a third car available for such purposes.
Keep in mind that
for every Tesla buyer now, there's at least one econo-EV driver out there charging at 3.3-6.6kw at fastest at home. For every person who drives over 250 miles in a day without any stopping or rest locally, there are thousands who charge off 110v outlets at home solely and never run into issues. And I know someone will use the "but Leaf drivers usually have a second car!" argument, though to me that seems silly given the financial differences between most Tesla owners and most Leaf owners.
Tesla has more information about their drivers than any other auto company in the world. It's no different than how Apple won't cater to a large number of fringe cases (SD cards, removable batteries, flash support), but they seem to be doing quite well. Tesla is building EVs that cater to a general world market, not fringe cases, and that's why they're such a successful business.
And again, this is all 100% speculation because a Founder confirmed the higher single charger. Not only do they manufacture this component in-house, but this same next-generation charger will also likely become part of next-generation superchargers. Tesla has a huge number of reasons to invest in a much more powerful charger. They're rolling out liquid-cooled cables, and I think there's a pretty good possibility that the 72 amp charger is part of achieving their publicly known charging speed goals.