Any half-decent site rate limits push actions like posting and following, including Mastodon, Lemmy, and Hacker News. Otherwise you have massive bot spam DoS.

Ideally a site has data dumps, and maybe even allows you to access static content without a rate limit because that is cheap. I wouldn’t expect this on Threads. In fact, I doubt Threads is much better than Twitter on restricted access, the reasons people want threads are different (mainly, no premium boosting and no Elon)