$900 a month is quite affordable compared to hiring a private chef. It’s all relative.
I’m cheap af, but that doesn’t make me ‘right’. If I made $1000/h or something it would make complete sense to pay $30 for a $10 meal each day if it saved me even just 15 minutes of effort that could be put towards working instead. In that case, I’d argue it would be ‘wrong’ and wasteful economically not to use the service.