It's not dead, it just lived long enough to see itself become the villain. Reddit used to be about communities and people. Now it's about bots and defending pedophiles. And falsely accusing devs of blackmail and shuttering the API when said dev brings the receipts. That, too.
Of course, said dev's app got open sourced and ported to Android for Lemmy users, so there's that. I don't know much about coding and source, but both Voyager and Mlem look like they got the best parts of Apollo. And that's a good thing.