I do not use AI to code; but I have been programming for two generations now.
I’ve taken a few breaks in that time, and switched technologies at least ten times also, and it’s very easy for me to forget a lot.
Programming is like any skill, it requires constant practice.
Am I a good programmer? Probably not that skilled, but I’ve written over a million lines of code and have run the gamut of architecture from: “Break this large file into 500 lines each, now we call that as a function” to “all numbers are object oriented” to “if it works great”