Flying without ID just gets you the full patdown treatment. It’s not like they’re tracking down people to vouch for you.
It's not just a patdown. They take you to a phone booth that has a direct line to some portion of the FBI IIRC, and they ask you a bunch of questions to confirm your identity. At least this is what happened to me about ten years ago when I lost my wallet in a different state and needed to fly home.
I don't know what you mean by "full patdown treatment", but they're absolutely tracking down your information in databases and interviewing you about it. See replies to:
https://news.ycombinator.com/item?id=46864182
It's absolutely not just enhanced physical screening.