This is a harmful myth. It's possible to get emergency care under pretty much any conditions. Everything else isn't available.
You can use this trick if you got hit by a truck or had a big infection. It doesn't work to get a hip replacement, or chemo, or post-stroke occupational therapy, or a prosthetic, or a pacemaker, or...
That stuff requires insurance. You need to stop telling your friends that fraud is the answer and start telling them to sign up for care.