From what I understand for most people it isn't a conscious choice, it happens slowly over time. People naturally don't want to waste time, the code is there a

From what I understand for most people it isn't a conscious choice, it happens slowly over time. People naturally don't want to waste time, the code is there and if you don't look too closely it works, so they start skimming instead of going in-depth, expecting anything majorly wrong to pop out. But those things probably won't because generated code is very good at looking extremely high quality at a surface level no matter how bad it actually is. So eventually even the skimming starts feeling like a waste of time so it tapers off too.