I just watched copilot today turn a 8 line fix into 500 lines, so, yeah, verbosity is a big side effect
It occurs to me this pattern might be the average code we humans have produced. We all have made those quick fixes, copy-pastas, and dirty hacks... they learned it somewhere! I also assume that some of the behavior is an artifact of their training regime.
If you can make it 800 you can claim to be a 100x engineer!