It is also a lot easier from a technical aspect to price in fiat and let software display a sats price for me, all of the PoS apps, customer wallets and even Nostr can do this automagically.

Will be really interesting how prices will adjust themselves after hyperbitcoinisation, for example I can work out how much something cost me to produce in sats, how much I spent on the materials and energy, even my own time will have a sat value on that day... not sure what signals will be used to then reduce a price of something that has already been produced but the money to buy it is more valuable (without fiat to compare to). Would it be simply determined from the rate on new coins getting mined?