Out of my world, but I could see why the super-rich might like something like this. But I guess they have their own personal assistants for this stuff anyway.
I'm far from super rich, but I make a small multiple of most senior dev salaries, and I could see this being useful
If you make 3x of senior dev salary in the SF then you are in the 1%. So i'd probably consider you super rich.
To me, 1% is rich, but not "super rich". The 1% net worth cutoff in the US is somewhere in the single-digit millions. I'd say "super rich" starts around a 9 figure net worth (hundreds of millions). That's more like the 0.01%.
$400k household income puts someone in the US top 1%. I don't think that fits any common definition of super-rich in the US.
I'd say that depends what part of the US you're in.