Music can come in different flavours after all.
Some music has its roots purely from theory games - can be very interesting stuff. But it is not so much science as rather games of rules and perception.
Other music has its root from a musicians fellings and phantasy - not always theory involved, sometimes just intuition and experience, and having heard lots of others and own music to teach the phantasy what sounds good. This can have soul that you could describe, but would most probably fail trying to make theory that won't just describe the surface, but enable you to recreate the same in the same quality just by the rules.
People grown up with music theory seem to seldom be able to understand this - that music is so deep in the human soul, for some people there doesn't have to be theory to be able to make really great musical things. A gifted phantasy can sing pieces similar to bach's style after hearing some pieces by him, without knowing a shit about progressions and counterpoint. But has to be gifted, and not everyone is.
But most stuff happens in between I guess, and theory makes a very good steroid boost for inspiration to come. It is not like it is the math of a ball's trajectory vs. throwing it at something. It is more of a give and take, each side can enrichen the other, none has to be dominant but can.
It does boost creativity to know theory. It is up to the point, when your ideas are failing, you can still mock some theory to get a song together. Not that it will have the same soul as really inspired work.
So do learn, it is for benefit. Your phantasy will pick up the knowledge, and sing new songs incorporating the ideas.
Don't get square at the beginning, when you are starting to understand rules and the world of music you're used to seems to fall together. This can happen and block your creativity a while. It will probably most happily fold back together, and then rather enrichen your own style instead of spoiling it or blasting it onto a wall.
And theory will not replace practical training, and training by trying to apply it a lot until it works for you.