I generally have to maintain the code I write, often by myself; thousands of lines of uninspired slop code is the last thing I need in my life.

Friction is the birth place of evolution.

Some people go to camping now and then to hunt their own food and feel connected to nature and feel that friction. They just won't want it every day. Just like they don't tend to generate the underlying uninspired assembly themselves. FWIW if your premise is the code they generate is necessarily unmaintainable compared to an average CS college graduate human baseline, I'd argue against that premise.