This is exhausting. So I will now be painfully detailed in hopes of being clear enough to avoid misinterpretation, willful or otherwise. And then I shall refrain on commenting any further
You came to the conclusion that the poster could have possibly meant "putting in your time" might only mean 1 year.
It surprised me that any person could reasonably come to that conclusion. I still find it baffling, as I thought it was quite clear that poster did not mean any such thing and that while "putting in your time" is vague, no reasonable person would ever conclude that, "Technically yes if you've put in your time at the first job, you are retiring from that job." meant "So if you start a job at age 24 and leave at age 25 to go to another job, you can say you "retired" at age 25? Every time you change jobs is "retiring"?"