While Airbnb seems to think that removing any barriers to guests by not requiring that they have actual face photos, allowing them to try to book without having first had their payment method verified, and their ID verified, what they are actually doing is a disservice to guests. Because hosts will often decline bookings from guests like that.
If they required guests to upload all their info and write a short profile, before being allowed to try to book something, that would be much better for both hosts and guests.
Just as it takes about 24 hours for a new listing to go live, newbie guests should be required to submit all their info and have it verified before they are cleared to book.