Having one payout per year would help with taxes. 
Yes, that’s the main reason for L2 SNO who cash out directly (less tax work),
also its scheduled, so you don’t forget it.
( and pay extra taxes the next year exeeding the free limit , at least in germany.)
Wouldn’t work here, as the L2 transfer is already counting as payout.
you understood wrong. ofc the one payout counts.
all theoretically:
BUT if you forget it (to push the button method), until next year, you cash out double amount, exeeding free limits eventualy. That is covered with scheduling.