I confess, I've almost never used it on my own.  To the extent that I've used it, it's just seeing posts that others have embedded in various places.
But today I wanted to see what someone was saying lately, so I googled "<name> X" and sure enough I got a link to their X account.  But their posts are not sorted by date and I can't see a way to see what they've been posting recently.
What is with this weird interface?  Why is it hard to use?  I feel like a total idiot for not knowing how to use this thing.