As I stand now, it seems really hard to justify to invest time into it when the benefits over using something very easy to work with (like JetBrains IDEs for Java or VS Code for Python) sound marginal.
I know experts can fly around in it and it looks amazing. Having a single point of entry for all kinds of things (ssh to VM, git, text editing, org mode, email...) sounds great, but it is so much work and it seems like I could always be spending time doing something immediately beneficial with the tools I already use. Not to mention that the end result might not even better for the given application (can I really hope to have easier time developing a Go app with Emacs and couple not-so-actively developed plugins than GoLand/VS Code?).