It's amazing how much faster Mastodon is than Twitter, e.g., it takes 22s vs. 86s to load the same thread (https://mastodon.social/@danluu/109310899548757516 / https://twitter.com/danluu/status/1590122315274412034) on an old cell phone with a mediocre connection in Toronto.

Mastodon isn't exactly hyper optimized, but Twitter is anti-optimized despite quite a few very good engineers having done serious optimization work to speed up Twitter.

Unfortunately, that was always a 1 step forward 2 steps back affair due to leadership priorities.