“The team has been hard at work this week and we’re now happy to announce that the number line has even more numbers available in it.”
I don't agree with most of what Musk does; but if this is the kind of innovation that requires a team of highly compensated tech employees and warrants a press release; something is actually, seriously wrong with efficiency in companies like Apple, and maybe he's actually right that Twitter, or many companies, could run better on far fewer employees.
Also whilst some employees may find it fun and others on H1B have no choice but working 80+ hours is not sustainable.
So before making conclusions about whether Twitter is some innovative new approach to headcount I would give it a little more time.