This claim can be easily tested.
Create a new account and wait for violation after around weeks. Even if you followed every standards your account will be disabled. Surely Facebook has fallen in standards. They are desperate to get numbers and who knows what's their future plan. One thing is clear they need phone numbers because that is one of the most important user data.
I deleted Facebook years ago but was testing it months ago. I got violation 2 times on 2 different accounts without doing anything wrong. Then people around me told same thing and it was clear its fraudulent activity in shadow of community standards. Now one must think how much rules these tech giants follow and how they treat users.