Maisel is in the comfortable position where he doesn't need to do that anymore and hasn't needed to for a long time. That is why this was wrong of him. He doesn't need to protect his reputation or commercial interests against some tiny project doing an 8-bit tribute to Miles Davis. He gains nothing: the net effect is that this guy, that tried to do something nice that made a few people happy, get slapped. Nothing else has come of this lawsuit.