After reading through the thread, the developer's points seem to be rational, coherent and well-delivered. I can understand some of the frustration from users, but not the outright hostility towards the end of the thread. They only have so much bandwidth, and the responses feel very "patient" to me.
To be honest, I've been using Sublime Text since before work started on version 3 and I don't really understand why there is such a fixation on the update cycle. Unless I'm mistaken it's only two full time developers, and historically it's been only one. The dev releases feel very stable to me, though of course I can't claim my workflow is the same as everyone else's.
I can't think of any particular features the text editor feels like it's missing. They seem to be nailing it, in my opinion. I ascribe to the philosophy that perfection occurs when there is nothing left to remove, not nothing left to add - they are relatively slow with adding new features, but the editor is blazingly fast and consistently delivers the experience I want in an editor.
For what it's worth, my opinion here is colored by the fact that I don't really think about the development cycle of most of the software I use. I couldn't tell you what major point release I'm on for 1Password. I think it's 6 on macOS, but I'm not confident. I just update it when it gives me an alert. Similarly, I don't really know what version I'm using for JetBrains PyCharm or CLion, and I've never followed the development roadmap. All I typically know is that I'm on the most recent version for the desktop software I use, and if something seems buggy or odd I check the changelog and then maybe look into it.
I'd be genuinely interested in hearing why people seem to be disappointed with Sublime Text, and what features they wish it supported.