That would be something Microsoft would have to prove in court and not that the AI came up with a similar approach on its own. ReactOS never got sued despite its similarity to Window's code.
Also not all Wine code is related to reverse engineering.
They might not have been sued, but ReactOS was certainly threatened. There was a large audit to ensure nothing was infringing. [0]
[0] https://reactos.org/wiki/Audit
They might not have been sued, but ReactOS was certainly threatened. There was a large audit to ensure nothing was infringing. [0]
[0] https://reactos.org/wiki/Audit