Even if you upload a photo, FB will block the account if the photo doesn’t show your entire face. I set up a Facebook account where, after a holiday in Morocco, my profile photo was me in a turban where my mouth was obscured by part of the turban. I got a message from FB saying that this was not sufficient and I would have to upload another photo where no part of my face was covered.
This sounds like bs to me. There is a significant number of users with profile photos that don't contain a face and this is the first time I'm hearing this...
Those users probably have performed various other actions that reassured FB they had not signed up to spam (joining groups, adding many friends, etc.). It was the combination of being a new signup with an emptyish profile and having no clearly identifiable face that led to my account being blocked, with a message that specifically said I would not be able to regain access to my account until I uploaded a photo where my face was fully visible.