If you must, it doesn't seem like a big problem still. Go to thispersondoesnotexist.com, hit F5 a few times to find a nice portrait, then Google "driver license template" and apply basic Photoshop skills.
I did not check if images from thispersondoesnotexist.com would work to pass the selfie check, but my guess is that they wouldn't. A professional portrait of someone from a Western country who has never been seen on any photos Facebook owns, not even in the background? That's a red flag. Also, my guess is that Facebook knows about that page and takes precautions.
Anyway, if Facebook tries that hard to make sure I'm not there, why should I join?
I do not believe they check it; if you provide an ID scan, it's good enough.
Because you have no choice but to join.