Twitter itself used to be very usable. You used to be able to just open a link to a tweet, that was just rendered as HTML. Replies in thread below.
Now it loads the SPA, you get a spinner, 1/5 times the API fails to load the actual tweet data. If you're not logged in you get bombarded with signup popups. Cookie banners come up from time to time even if logged int. Instead of the replies to the tweet, you get other supposedly related tweets as in replies, you have to click "Show more replies" over and over to load more of the fucking thread you opened.