It's not about being able to do more faster, but be able to faster get help doing what you wanted to do. For example, before LLMs, if I wanted to figure out how to do something with a specific analog synth I basically spent time reading manuals and browsing internet forums, piecing together whatever I could find into something actionable, sometimes slightly wrong, but at least in the right direction.

Nowadays, I fire off the LLM to figure it out for me, then try out what I get back, and I can move on to actually having fun playing on the synth, rather than trying to figure out how to do what I wanted to do.

The end goal for me with my hobbies is more or less the same, have fun. But for me the fun is not digging through manuals, it is to "do" or "use" or "perform" or whatever. I like music production because I like to make music, not because I like digging through manuals for some arcane knowledge.