I made the switch from Vim to Neovim as soon as I felt confident that (1) the project was going to be around for a while, and (2) it was on track to "overtake" Vim (you may choose to disagree with me on this, I found built-in LSP to be a compelling selling point, but the specifics aren't really related to the point I'm trying to make). That it was almost completely a drop-in replacement, down to the init file, certainly didn't hurt.
Under the author's framework, Neovim apparently prefers "progressiveness" while Vim prefers "stability", and those two sound dimetrically at odds based on their descriptions; but both have large, active communities that aren't going anywhere. I'm not sure I can say the same about Kakoune, for example, which is a certainly a promising project but hasn't yet convinced me to jump the fence.
[edit for Emacs thoughts]: Now that I think about it, "text centrism" in my mind is also closely related to longevity. I don't care as much about the properties of plain text as I do about the fact that I'll be able to open/view/edit them _even if the application ecosystem dies_. I find Emacs attractive here with org-mode and, to a lesser extent, org-roam (the comparison here would be between e.g. SaaS productivity offerings like Notion).