Yes, there are actually a lot of developers helping with Lemmy! We have a Philippine admin from here who is helping out with Lemmy as well and conversing with the other helpers (hello, you know who you are!). It’s actually kind of exciting because there are so many people wanting to help out and make this a better place, and all the code is out there for people to see, understand, and improve on.
I personally wish there were more communities - it’s kind of difficult for me to navigate at times when looking for communities especially if they exist in another instance, but otherwise, I have definitely replaced Reddit with this site. I just lurk on Reddit now, don’t upvote or downvote, and just read some stuff that I can’t find over here on my desktop, but here - I am actively engaging. It does feel more chill, and kind of reminds me of Old Internet somehow and I really like how so many people are coming together too to fix bugs and improve the QOL.