I don't really see anything wrong with presents, especially when we're speaking about amateur production. They are there for a reason, and are certainly an excellent blueprint. But...
It is very amateur. Similar to samples, professionals process them to their desired sound. I don't really think any professional is going to use a preset as is (if they're even going to use them at all).
No doubt presets helped me to create my first dozen tracks or so, but after a while your experience reaches a level where you know and have the ability to adjust specific parameters or sounds within that preset to get what you really want.
In my opinion sound design is not something amateur producers should focus on (doesn't mean you can't), but I feel like a lot of sound design comes later down the path of music production once you find your personal style.
Recently I was creating a track where I came to a huge road block, because I couldn't get the right sound to finish the introduction of a track. Turns out, sound design was the answer. I re-watched all the masterclasses and multiple sound design videos and was able to tweak what I needed to get what I wanted.