I think this is a huge reason for the initial popularity, because it was trivial to build really fun experiences on top of that, until they cut it off for whatever reason (guessing money, one way or another).
At the same time, you could also view tweets without being logged in, and you saw replies too.
The complete firehose was expensive and paid-only.
You could get a sampling of Tweets at a lower rate through the API. It wasn’t the complete firehose, though.
And if you click on an account you just get top posts of all time instead of a chronological feed, so it's impossible to even find the context while being logged off.
https://news.ycombinator.com/item?id=28268365
Edit: Some more posts -
> Come on, pre-Elon you could click on a Twitter link and read the entire thread as well as the replies, now you just get a single tweet with no context above/below.
I don't want to nitpick stupid shit like this mate. But my point was to emphasise that Twitter had been going downhill before the takeover.
(And fact that it was always a toxic cesspool regardless of who owned it, but that's a different matter altogether)
There were similar trends at other social media sites that happened around the same time.