There were/are a lot of dumb subs full of dumb content for sure, but what I miss about Reddit are the subs that have a super deep expert knowledge base. The plumbing sub, the mechanic advice sub, the vacuum sub, the fountain pen sub, etc. I've saved a lot of money and heartache by asking knowledgeable people naive questions in niche subreddits. Lemmy just plain doesn't have the numbers for those kinds of subs to exist here at that level yet. But I hope we get there because for me that was the best thing about Reddit (though I also have a soft spot for the big "what's your true real life paranormal experience" mega-threads that would pop off every few months.)