BSD is free like the Grimm fairytales.
Sometimes you're shared the stories and you're allowed to reshare them, e.g. from Gutenberg. Sometimes you're not. E.g. from Disney.
BSD gives you the freedom to take it, modify it, distribute it and not allow the recipient the same benefit.
"Free as in beer" doesn't imply the knowledge nor right to start a brewery and produce your own. It's ridiculous to say Linux is free as in beer.