US hiring practices expect to see something that validates your birthdate, so kind of.

Fast firing can work, but none of the places I've worked were prepared to do it. Similar to what a sibling commenter posted, years of experience is something, but what you got out of it is another. There are plenty of people who have spent a lot of time doing something and not gotten much experience. In my mind, a good interview process figures out where the candidate actually is with regards to experience and capability, if they fit with the company, if the company fits with them, with as minimal a time commitment for both sides as possible.

It's not great for either party if someone is hired and fired in a month.