Second, it is legal (in the United States) to perform or play music, even copyrighted music, at personal, private, non-commercial events. These events can be in-person or online. As an example: it is legal ("fair use") for someone in my family to strum a popular, copyrighted tune on their guitar during a family gathering. Another example: it is also legal for us to listen to music that only one family member owns a legal copy of -- this happens any time someone puts on a CD during Christmas. These perfectly legal, normal, un-bureaucratic activities seem to be prohibited by Facebook's new rules.
During COVID-19, online experiences have replaced many experiences that people would otherwise have had in-person. Facebook's rules seems to be unnecessarily restrictive, which is especially disappointing during this time when many experiences people would be having face-to-face are now taking place on its platform, or on competitors' who may imitate Facebook's policies.