You’re right, but you’re also not seeing some of the great and diverse content on Lemmy. Obviously reddit has a fuckton more content. Network effect and all that, but my Lemmy feed is not as you describe. I’m subscribed to a bunch of Linux, FOSS, privacy, music, and other great communities. While I do see articles and screen caps when I browse the all feed, my curated feed is full of questions, discussions, new (to me) music and more.

It certainly takes some effort to curate a feed for yourself, but it can be done.