Lemmy on the desktop is great. It's so much cleaner than Reddit ever was. I really enjoy it. It's missing a bunch of features for moderation and other things, but for now it gets the job done.
Reddit via Jerboa for Android is rough. The app looks fine, but things just don't work. Clicking on links refreshes the feed and you lose your place, opening photos doesn't work half the time. It's a rough experience. It needs developers to contribute to it badly, or one of the popular Reddit client devs need to come in and make a Lemmy app.
I've only seen negative toxic posts and comments from lemmygrad users. Everyone else has been really fun to talk with.