Went to feed and this happened..

I'm not saying they'd approach a human, but they can sure lose their fight or flight programming. I have a few that I feel sure would be toast if escaped (and not because of mutations/standing out visually).
But yeah, a lot of snakes have escaped for a long, long time and been recovered. I found a Cal king over a year later back in the 90's. It had survived an Asheville blizzard winter, too. That snake was bitey and wild-natured though, which I'm sure didn't hurt.

I have a female amel that will not eat in front of me no matter if it is alive or F/T. She got out about a year ago and I found her a week later trying to get into my mice. She knew what they were and was striking at the glass trying to get them as they ran by. Before that I would have said she would never make on her own.

I imagine most of mine would flight just fine given the opportunity....it's instinctive....they are still wild animals and not truly domesticated. They retain their wild instincts.....