Given just how many AI bots scrape up everything they can, oftentimes ignoring robots.txt or any rate limits (there have been a few complaint threads on HN about that), I can hardly blame the operators of large online services just cutting off data feeds.
Twitter however didn't stop their data feeds due to AI or because they wanted money, they stopped providing them because its new owner does everything he can to hinder researchers specializing in propaganda campaigns or public scrutiny.