Clickbait title. Please change to "Facebook Music Guidelines," or something that isn't editorialized to make it sound like Facebook is against music.

At most, this guideline says not to stream other people's music to the internet without a license, which is very reasonable, given that artists want to get paid and wouldn't want you to play their songs on air for 2 billion people to enjoy for free.

Otherwise, it quite literally states the opposite - please do play your music for your friends, so long as it is yours.