Well iamlindoro, I would say that what you describe is Financial Independence when you write, "Retirement is the freedom to work or not work, from 0 hours to infinite hours, for no pay to infinite pay, so long as engaging in that work is entirely motivated by the desire of the retired to do it, but not out of financial need."
As I've said, someone who is FI is indeed free to do whatever they want. But if you are going to use that defintion for 'retirement' as well as FI then why bother using the term FIRE? You only need the first half (FI) according to you, so what is the purpose of the second half RE? Does it only mean you reached FI before age 65 or something? I don't think so.
Davids, Mark Cuban is far from retired. He works full time. Yes he may not need to and yes he may want to. Again, he may be FI but he isn't retired.
Forummm, again the same thing. You are defining FI, not retirement when you write, " Retirement is a mindset. Once you don't need money, you can do what you want with your life. Which can be doing something that pays you."
I think you guys want to re-define a word that has been defined for a long, long time and is understood by everyone to mean, you no longer work full time. You may think your re-definition is somehow superior to the old definition. That's fine, you can think whatever you want. But it doesn't make you right or your definition superior. In fact, I'd just it's silly.
But if you want to call a guy who works a 40 hour week as an HR recruiter 'retired', go ahead. I always enjoy a good chuckle.