It is not the same comparison. CAD produces exact same drawings as handwritten ones. It purely makes engineers more effective. It just took the menial side of the work. You still had to care about every single detail and tolerance. You still followed the same way of manufacturing things. You still do the smallest parts of it. Just like word processing vs handwriting a book / letter. You still have to type every single letter. You still think every sentence.

AI is the complete opposite. It takes away the thinking part. When people use AI, they tend to offload a lot of thinking part to it as well. I use it because company policy. But if you care about every single if case and every single variable name, writing by hand is faster unlike CAD.