Even though I'm anti sats, converting sats to bitcoin is also confusing. Most people around the world recognize Bitcoin as a high-value asset, so having apps spend 1 bitcoin (sat) is equally confusing (example from boardwalkcash shown below).
"bits" or "fragments" make natural sense, where "bits" is more on brand.
"cents" can make sense, since it shows people the divisible nature, but most people recognize cents as a function of 100.
"sats" makes sense in the way "benjamins" make sense, but it introduces a learning curve and the idolatry is annoying when it was designed by a guy that intentionally removed himself from the equation as a way to actualize the existence of his/her/their creation.
"bitcoin" is too ambitious and creates a different form of friction on multiple levels.
Perhaps there needs to be a stronger design consensus around fractional bitcoin, and the symbol should be popularized in app design.