Learning freestyle will improve almost every aspect of your windsurfing as it teaches you to deal with the board and rig in weird situations, go for it!
Make no mistake though to even learn to Vulcan at your age is going to be incredibly difficult, and I say at 'your age' because you referenced decades, not taking the piss. The thing about a lot of freestyle tricks is they go against most of the muscle memory you have learnt over your decades of windsurfing. As you get older it becomes significantly harder to un-learn/re-learn that stuff. It's one of the reasons people find it so hard to learn to forward loop, it's basically a catapult, most windsurfers spend their entire formative years in the sport trying to avoid that.
You also need good conditions and an absolutely unrelenting commitment to keep trying tricks....and not just re try the same thing over and over, analyse what could be going wrong and try something a bit different. I reckon when I first learnt to Vulcan it took me 3 years of on and off trying...I was probably mid 20's at the time. Then one day I just said stuff it and every session I just tried them non stop until I cracked it. And once you do you learn that muscle memory the other entry level tricks like spocks, spock 540, grubby's etc come a lot faster....but cracking that first trick can take a very very long time.
Probably the only way to do it, unless you have fairly good conditions, IE can get out at least 2 or 3 times a week for a few hours, is to go to one of the big windsurfing centres for a few weeks, enrol in a course and just smash it non-stop with unwavering commitment. Otherwise it ain't going to happen. I'd also add, before I started really getting into it I was what i'd consider a fairly good level, could gybe no probs, already big into wave riding, could do a passable forward loop etc.
You also need the right gear, get a modern freestyle board, trying to learn this stuff on anything else is just a waste of time as it's that much harder. You don't really need specific freestyle sails, wave sails are fine to start out on. And Gestalt is right, start at the basics, heli tacks, upwind 360's etc, they are the basis for most of the tricks. After all a spock is just a bit of a jump then a helitack but while planing backwards, swtich stance

Some of that might sound a bit harsh, but just trying to be realistic going from my own experiences, and I really only know the basics, spock 540 is about as tech as I can get. I tried learning flakas and shakas but basically gave up as I couldn't really commit to the crashes required to learn them....and then foils came along