I like his argument, and I would like to extend it to something like 'Since some people get through life on a salary of $7.75/hr (Or less), we should take away Elon's billions of dollars.' It'd only be fair - he can, after all, do well without all the comforts and power that his wealth affords him.
I think it would also be a reasonable accommodation to just cut the SWE’s salaries down to 10% below the lowest end salary of the manufacturing workers who have to be in person to do their job and let the SWEs do their job remote.
But I expect that may not be a popular opinion here on HN, though.