This seems too cute by half, courts are generally far more common sense than that in applying the law.
This is like saying using `rails generate model:example` results in a bunch of code that isn't yours, because the tool generated it according to your specifications.
'The Board’s decision was later upheld by the U.S. District Court for the District of Columbia, which rejected the applicant’s contention that the AI system itself should be acknowledged as the author, with any copyrights vesting in the AI’s owner. The court further held that the CO did not act arbitrarily or capriciously in denying the application, reiterating the requirement that copyright law requires human authorship and that copyright protection does not extend to works “generated by new forms of technology operating absent any guiding human hand, as plaintiff urges here.”' From: https://www.whitefordlaw.com/news-events/client-alert-can-wo...
The court is using common sense when it comes to the law. It is very explicit and always has been... That word "human" has some long standing sticky legal meaning (as opposed to things that were "property").
I’d guess the legal scenario for `rails generate` is that you have a license to the template code (by way of how the tool is licensed) and the template code was written by a human so licensable by them and then minimally modified by the tool.
[1] https://en.wikipedia.org/wiki/Monkey_selfie_copyright_disput...