Is it possible to make good artwork without rigorous technical skills and a basic understanding of things like perspective? Yes. People were doing it for millennia before the renaissance masters started codifying things.
However, technical skills help you with the process of taking the picture in your head and getting it onto paper or screen. Refusing to learn how to make basic shapes is a bit like refusing to learn proper grammar before writing a book. You can certainly do it and it’s theoretically possible you will make something awesome, but you have decided to play on hard mode for very little expected benefit.
One major caveat. Never fall into the over-preparation trap in art, where you feel like you can’t try to make anything until you have met some arbitrary standard of quality first. This can work if you have a benevolent mentor figure there to help you avoid bad habits and give you a thumbs up when you’ve gotten good, but it’s very unlikely that you have an objective view of your own skill level so you might as well just start now.