A few days ago, I came across a blog post titled On FLOSS and training LLMs that articulates a growing frustration within the free and open source software…
So, everything depends on how you define substantial similarities. My opinion is that if there are no copy-and-pasted chunks of code (except for trivial), there are no substantial similarities.
Plagiarism is a form of copyright infringement if there are substantial similarities.
Open source licenses build on top of intellectual property laws.
Licenses like GPL were made to destroy copyright from the inside
So, everything depends on how you define substantial similarities. My opinion is that if there are no copy-and-pasted chunks of code (except for trivial), there are no substantial similarities.
https://en.wikipedia.org/wiki/Substantial_similarity
I live in another country, however the idea is the same as I wrote above: this all is about direct copying.