This is quite simple put in the article.
> The crawler did not respect our robots.txt, (which it did retrieve), ignored our Terms of Service, (which forbid scraping), and defied the creators' licenses: 423 of the 712 projects are licensed for non-commercial use only.
That fight was already lost back in 2024.
Sue them. They'd sue you for ignoring their ToS.
A robots.txt file is not anything, not enforceable, it's politeness. Of course it was ignored.