You seem to be misunderstanding the premise of the statement. Go write, "print 'foo';" and copy and paste that statement one hundred thousand times. Congratulations, you just wrote one hundred thousand lines of functioning code! Was that hard? No? Okay, so how is this different from other code? The difference is that it's easy to _understand_ how that code works, because it's the same behavior repeated over and over. So, writing code is easy, but understanding code is difficult! And, when we code with AI, undertanding is precisely the part that it can't handle, even though that's where almost all of the value is!