I think the bigger argument is that when you zap someone you’re realizing the gain or loss on the sats you zapped and may owe tax on gains. I can’t imagine this mattering for sending spare change around but it’s an attack vector if Uncle Sam wants to mail you to the wall.
Kind of like if you have an 11 round magazine in CT. No one gives a shit 99.9% of the time but if they’re looking at you for something else and want to paint you as a terrorist, they’ll find that 11 round mag and charge you with a felony to stack on top of any other charges they can drum up.
With zapped sats they can hit you with tax evasion potentially.
