And I’m sure I’m still on the voter rolls despite voting legally only in NJ.
If you haven’t voted in New York in a certain number of years, you get a letter informing you that unless you contest it, you will be removed from the rolls.
This went back and forth over the years, as people started claiming it was discouraging people from voting if they hadn’t voted in a while. It became illegal, then it became legal again, with some tweaks.
I would guess that if the letter goes back to them and is not forwarded, then that is understood as not being contested.