Oversight? Hardly. You don’t seem to understand the purpose of copyright to begin with.
The purpose of copyright is to progress science and useful arts. Period. Any action taken in the name of copyright that does not progress science and useful arts is unsupported by law.
What else do we know about copyright? A copyright can apply only to creative expressions. While the bar for sufficient creativity is intentionally low, it is non-zero.
Another thing we know is that purely functional expressions are not copyrightable. When does an expression go beyond being a function expression to a creative expression? That’s up to a judge. Since code is math and math, by itself, cannot be copyrighted, when an expression reaches the level of creative expression must be beyond the math. Updating a database field, factoring primes, or using data correction algorithms are not creative expressions.
Now for AI. Only humans may own copyrights. The output of an AI is not copyrightable. But what if the input was copyrighted?
When it comes to software code, AI will value expressions that are commonly used more so than uncommon ones. But software code is, by it’s very nature, an intertwined collection of copyrightable (creative) and non-copyrightable (functional) expressions. If AI values commonly used expressions, those expressions are highly unlikely to be creative enough for copyright protection in the first place.
So we have a circumstance where AI is trained on copyrighted but Open Source code. Yet the code itself is comprised of both creative (presumably) and functional code, with no clear delineation of what is and what is not protectable.
Lastly, many authors do not understand what constitutes a creative expression that is protectable by copyright. The amount of work required to create the expression is meaningless. Manipulating data to thresh out something interesting is not creative. Let’s just face it that most software is comprised of mostly functional expressions that are not protectable. Back to that “math” problem again!
The big take-away? The purpose of copyright is to progress science and useful arts, not to build walls around ideas and concepts (which, by themselves, are not protectable).