I believe ditto.pub has solved the Reply Guy problem if that's useful to you. I would recommend using that as main client, especially for new people 

There are two main spam attacks tho. This guy is not the reply guy one, which hasn't stopped. This is guy was only targeting dev's posts with replicated replies with emojis thrown in. Just to be clear lol.

Still annoying, just cos it only replied to devs doesn't make it less annoying. Most people follow the devs here lol.