but implying that people will “know” is a bad assumption
They'll learn when they send 10000 sats from one wallet and receive ₿10000 in another.
Not only does using one symbol for multiple prices
Very few wallets use ₿ as a currency symbol. They mostly display "BTC". Besides, decimals are impractical, so we don't need ₿ as a currency symbol for it. Sats is the standard.
it’s a regression in user experience from the sat symbol.
The vast majority of wallets allow users to see the value of their balance in fiat.