“Unix certified” aparently is a thing to mainly get on US government contracts. 

BSD systems are good for their own reason but the hyper focusing on the “true unix” thing anachronism at this point. Linux *is* the Unix of today. Even the version of ZFS FreeBSD uses is developed first on Linux nowadays!

You can’t say I’m wrong when most of those systems spend time and resources developing and maintaining “Linuxlator” layers to run Linux binaries.

What about innovation then? FreeBSD scheduler doesn’t support big.LITTLE architectures in current year. Linux got multiple new file systems since FreeBSD ported ZFS from Solaris.

Have fun running BSDs but disregard the slogans.