I think you might have a setting wrong. When I join a community on another server I see all of the posts including past ones.

Lemmy is different than Reddit, and that’s a good thing. I don’t need to replicate Reddit. My problem is just the muscle memory habit of opening a tab and typing in o l d . And hitting enter when it autocompletes

Hell yes. Desktop web interface is solid. Jerboa on Android is solid. Now I’m just working on breaking the habit of typing old.reddit.com while waiting for things during the day…