They aren’t wrong IMO - if you don’t do anything that requires a lot of processing power or really need a lot of slots for peripherals, PCI cards and drives, you might as well connect your external display, keyboard and mouse to a laptop. It gives you the option to take the entire thing with you, and a lot of people have spare laptops anyway.
I know plenty of people who don’t even use their laptop much because they’re doing everything on their phones or game consoles.
Himmler was a militay/police guy (e.g. head of the SS), the propaganda minister was Goebbels. Musk is far more similar to a propaganda minister than to an SS head.