IIRC there have been supreme court rulings about the legality of web scraping but they were all publicallu facing services like Amazon or other e-commerce sites

IIRC there have been supreme court rulings about the legality of web scraping but they were all publicallu facing services like Amazon or other e-commerce sites. Twitter is locked behind a login wall now so the rules in theory might be different. Of course, bots can still get in through the human door.