So from the user experience side, I'm actually liking Lemmy even just with the mobile site, which I'm guessing varies instance to instance. There's a couple quality of life tweaks I'd make but it's a lot smoother than expected.
A problem I am having though, which I hope clears itself, is that I'd say upwards of 90% of the posts I'm seeing are either "Reddit is dead to us" or "Wow Lemmy is great!" Both of which are fair viewpoints that they around certainly be allowed to share, but when that is the vast majority of the content, it does not entice me to regularly return.
The two things I regularly used Reddit for (Keeping up with a couple hobbies and educational materials) have communities but are largely inactive at the moment. I am aware that I can help the situation by engaging with them--and I will!--but so far the pervasiveness of the Reddit posts has definitely taken the enthusiasm out.
This post isn't quite what I am talking about, though, as you are at least promoting discussion, which is good!
I definitely have Show NSFW enabled and I've not seen a single bit of porn yet.