Same experience. I've been writing code for many decades, but that experience doesn't mean I can remember what I read when reviewing generated code. I write small, focused commits, but I have to take a day off each week to make changes by hand just to mentally keep up with my own codeset knowledge, and I still find structures that surprise me. It's not necessarily that the code quality is poor, but it's not like I (thought) I had designed it. It's lead to a weakening of my confidence when adding to or changing existing architecture.