youbet
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
And how you use the word "retirement" in context can determine the meaning as well. For example, one might "retire" from MegaCorp and be receiving pension, retiree medical and other benefits earned by participation in MegaCorp's "retirement" plan and meeting their requirements for "retirement." After "retirement" from MegaCorp, one might decide to turn your woodworking hobby into a small, part time business. Now you're "retired" from MegaCorp but semi-retired in lifestyle....what retirement is for person A is not the same retirement that person B is.
Nonetheless, there is still a dictionary definition of the word and very often, some folks (usually the ones with blogs who are WORKING to make money) try and sell the idea that they are indeed retired (as literally defined) and that is the only issue I have with it.
This is where I am in full agreement you. Leading a fully retired lifestyle does not mean running a business part time, working for someone else less than 40 hours a week or being fully engaged in a income producing hobby. It means you've stopped using time to earn money.
When bloggers like Mr MM say they're leading a fully retired lifestyle, they're being a bit deceitful as an attempt to further the legitimacy of the positions they take when authoring their blogs, newsletters, etc. I don't know why they do it. It seems to put some people off.
Anyway, it doesn't matter to me what lifestyle another person chooses as long as it doesn't interfere with mine and in the case of bloggers and authors, isn't misrepresented. I think having a flexible, lucrative, part time hobby that generates some income would be great, but I don't have one. If I did, I'd label myself FI, RE from MegaCorp and now living a semi-retired lifestyle.