In what way is it obsolete? Nitter provides a lightweight front-end to social media content which is otherwise on a hostile user interface (ie javascript-laden, tracker-filled, slow, heavy). It makes twitter content more viewable for people on slower internet connections and it generates a clearly-signposted RSS feed for the twitter account you’re viewing, so you can subscribe using your RSS reader.

Nitter stands up there with Teddit for Reddit, Proxitok for TikTok, and Scribe for Medium as a great way to view popular websites without loading their hostile javascript and interface dark patterns.

Edit: added links to projects and corrected spelling of Scribe