I'm not sure HN headlines - even ones like "we rewrote our codebase with X" - indicate that people are actually rotating libraries quickly. Rather, they indicat

I'm not sure HN headlines - even ones like "we rewrote our codebase with X" - indicate that people are actually rotating libraries quickly. Rather, they indicate our quickly-shifting curiosity, and cherry-pick instances of people actually acting on it because they're interesting. Tellingly, the "rewrite" blog posts usually are coming not from the fad preceding the current, but something much older.