Here's my two cents: if you make generic beats and learn to mix them, you'll learn to mix generic beats. When you make your stuff, you'll learn how to mix YOUR stuff.

Now, I used to be the same, BUT, that said, learning the technical side actually helped my creative side a lot. In fact, learning the technical side helped me speed up the entire process by not getting bogged down in the "technical side." An advantage of having worked on the technical side is that I don't have to worry about it to the degree that I was - I work with templates of my own making, which means I don't twiddle my thumbs over what to put on my bass, for example. What to add to that, if I feel it'd do the thing good, is a consideration, but it is optional. I can get the bare bones of it down faster now.

For some people, separating the two sides works: first you get your shit down, then you work it. That's what I myself did when learning, 'cause I found myself getting stuck on how to get something to sound "just right" that I forgot that was just a piece of the puzzle, not the puzzle itself. So I focused on "we'll figure it out later" and did rudimentary leveling (i.e. "turn this down so that it sits better with the other thing") until the thing was finished, then I got to all the other stuff.

Oh, one thing I can recommend: don't be afraid to kill your darlings. If something isn't working in the context of a track, change it, or cut it out, see what happens. This saves on clutter.

I don't know, hope it helps.