That was a case of scraping explicitly public data that was already available to the general public without any extra effort.

Which is exactly what Twitter is?

no twitter requires a login

Which anyone can make

I think that this is different because Nitter uses real X accounts for scraping, rather than publicly available data.

That is still a form of publicly available.

Explain to me why that matters at all in an ethical sense. Especially given the scraping / pirating that's gone on by all of these companies in the last number of years.

Who cares this is a subthread about legal advice.

When have ethics ever mattered in law?