The move fast and break shit is something that worked in the computer sector, and as an elder millenial who grew up with computers since early childhood (my family's first computer was a C64 in the 80s. I was too young to actually use it) seeing how computers have changed and exploded in power was something to behold. A mid-high end computer in 1980 was stone age junk to a mid-high computer in 1990, and the same thing from 1990 to 2000, and 2000 to 2010.
But you cannot apply the same shit to other sectors. For public services you can't expect to enter some place, fire everyone, and then think it'll be OK. It just isn't. They are services that are DESIGNED to have redundancy in order to properly work.
Take 911 emergency lines for example. I had to call 911 a few times in my life. Do you know how long the average wait time for me was? Zero seconds. Someone picked up right away. Can you imagine what hell would happen if they decided to apply regular customer service rules to a fucking 911 line? If you had to wait 5 or 10 or 15 minutes to get to someone, PEOPLE ARE GOING TO DIE. Criminals are going to be getting away with their shit far more frequently than before. They will get bolder, too, since they know that police response times will be dramatically increased. (even in the 1970s. The stopwatch gang in Canada had a system where they would get in a bank, rob the place, and be out in less than 60 seconds. The speed at which they operated made it very difficult for people and police to get there on time since most people won't even have fully processed whatever the hell was going on in that amount of time).
But that being said. I am genuinely amazed at just how successful Elon has been in enriching himself despite being a highly stupid, socially inept, and extremely inarticulate individual.