It's also copyright violation as a derivative work.
You can't take Harry Potter and change all the names to Baldy Fotter with the exact same plot just because you rewrote it in your own words, unless protected under fair use (like if it was a farce mocking Rowling).
These idiots are using AI to create derivative works, then selling it on t-shirts which nixes the already ridiculous claim of fair use.
It's also copyright violation as a derivative work.
You can't take Harry Potter and change all the names to Baldy Fotter with the exact same plot just because you rewrote it in your own words, unless protected under fair use (like if it was a farce mocking Rowling).
These idiots are using AI to create derivative works, then selling it on t-shirts which nixes the already ridiculous claim of fair use.