Ahh man, I really can’t answer the last question for you at all - everyone’s path is totally different and you’ll encounter such a unique set of circumstances and opportunities throughout your life that it’s really impossible to say whether a degree is the defining factor.
I didn’t go to art school and I’m fairly happy with where I am now, but maybe I’d be in a completely different place if I had? There are definite gaps in my knowledge that I’m encountering as I enter the professional environment more and more, but at the same time it’s nothing I can’t solve just by searching, practicing and asking.
Basically, I don’t know. I don’t know how your life will unfurl. All I can say is that what really really really does matter is to continually make things regardless of the type of study you do. Anything I’ve managed to achieve has just been through creating art and putting it out there and people saying ‘hey, kinda cool’. And maybe I would’ve done better if I’d had more skills earlier, but maybe I wouldn’t have been any happier for that. It’s impossible to say. I wish I could give you a definite answer either way, but really if you’re looking to justify your decision you’ll always be left dissatisfied. I spent so long during University literally MISERABLE because I thought I’d made a mistake, and if I could have seen how things were going to turn out I would never have wasted a minute on that bullshit.
I’m not sure if any of this was helpful - if I had to give a tl;dr it would probably be, having or not having a degree is just one part of MANY factors that determine your path, but a significant one. Whatever choice you make, try to keep peace with it.