Wholly, entirely, irelevent. Search the number of people who use NetBSD once a week compared to the number of people who use FreeBSD once a month or OpenBSD once a month. Check the number of people who have at least installed NetBSD. See what it's used for. NetBSD is completely forgettable.
Isn't there value in niche projects? If we just had freebsd it wouldn't cover all the usecases there are and it shouldn't. Niche usecases sometimes need niche software
I question the claim about Apple Darwin using NetBSD since Mac is based on a 10+ year very old version of FreeBSD, and Playsttion 4 and 5 uses FreeBSD. Sony aubmits code to FreeBSD to get it supported for Playstation.