I wasn't a heavy poster on Twitter, but I was a heavy user. Unlike the Lemmy/Reddit model, it's much more real time. So when I wanted to see how things were going with a piece of news of any sort, basically, twitter was better at that.

Its also much more person centered - you curate specifically a list of who you want to follow rather than just topics, so there could often be crossover. Usually for me, this meant I'd listen to some podcast or something for a while, figure out I like the host and their personality or often just taste, and then follow them. The added benefit being that most people I'd follow on twitter weren't so big that if you tweet at them and you're not an asshole, you'll get a response.