Yes the included Bash is very old, but installing an updated version is trivial. I'd rather have something included than nothing. Does BSD varient vs GNU varie

Yes the included Bash is very old, but installing an updated version is trivial. I'd rather have something included than nothing. Does BSD varient vs GNU varient matter when we're considering if something is unix-like? No one would say that the BSD distributions are not Unix derivatives. As they say, "GNUs Not Unix..."