I refuse to believe HN users are this genuinely ignorant about such a basic website. It's really nowhere near as hard to read as anyone here makes it out to be.
The first tweet when I scroll up is an answer in the middle of the conversation. The actual start isn't visible. And if I need to scroll up in order to understand anything, why not load the page from the top instead of jumping to some random place? It's almost like any basic website does this better.
I took your advice, and the fifth message in the list (by "@amazonfcrafael") starts with "(2/2)". I don't see the (1/2) of that message, so it seems parts of the conversation are missing and I'm looking at some kind of automatically generated subset of all the relevant tweets. But I guess I'm "ignorant"...
It's buggy, sometimes it works and sometimes it doesn't. Looks like the redesign still had some issues to shake out. No need to suggest that the commenters are ignorant.