I'm certainly not going to try and tell you, or anyone else what to think or what is right/wrong, I could only relate my experiences in my very short time at this thing we call turning.
For bowls and such, I turn dry wood only, that is my bowls and hollow forms are made from dry wood, the wood is dry when I finish turn, sand and put a finish on it, to the point that I'll put my mark on it. I have only once ever turned a piece of "Green wood" to the point where it was finished, in one sitting, this was a chunk of Mesquite that I got from a fellow turner in the US, I was advised to turn it thus
I often start out with green wood, as it has been fairly plentiful and almost alway free
I have a few large chunks of wood that were green, but have dried out, before I knew much about sealing the wood, now these are really full on 1/2 rounds of logs, that I would need to cut on the bandsaw, then mount on the lathe and turn. Boy that will be a job and a half, from a large chunk of hard dried wood, to shape the outside, then hollow out the inside, man, dusty, dirty, hard work, not my favorite thing to do. I would MUCH rather have taken the same piece of wood when it was still green and roughed it out, this way, the majority of the grunt work would have been done when the wood was much easier to work, then it would only need to be finish turned when it eventually dries out
Anyone who turns anything from wood, is turning wood that was once green wood. For a lot of things, like the snowmen I made, or the square plates etc, I used Maple that I bought already dried, the Maple turns well when dried, I really enjoy turning it when dried, but if I got a whole log of it green, I'd chop it up into bowl blanks and rough turn them into bowl blanks.
The few pro bowl turner's shops I've seen (mostly in pictures and videos etc) seem to have a lot of roughed out dried blanks around, just waiting to be finished turned, I know they all do not have that, but if the wood is free, I would think most would take it
Certainly for spindle turning, the vast majority of the wood used is dry, but I do know of some exceptions to that rule too, they are the more "Art" pieces, but they are spindle turnings (like the mushrooms that Eli Avisera does, he like the wood to be green).
I think that when you are learning, you should focus on making progress with understanding how the tools cut, make curlies, don't worry about making a bowl, or such, just concentrate on learning how to turn. In this case free green wood is really great, because if you got it for free, and you only have your time invested in it, so what if you end up with only a pile of curlies
Cheers!