I was about to make a very similar comment. I won't say I'll never switch to neovim, for a lot depends on future vim/neovim development, and unexpected things happen.

But I do agree that vim's stability is priceless. It's been years without any need for major changes in my vimrc, and without any trouble with the plugins I use.

I'm sympathetic with the author, though. Whenever you need to change, finding an alternative that "just works" always makes things easier and you can quickly get back to being productive. I'm not so sure that I wouldn't go down a similar path if the vim ecosystem collapsed.