Yeah, you really don't _have_ to be insufferable. I use emacs and evil/vim mode, have done for years, and it's not like I bring it up all the time or whatever, or shame people for using vscode.
It is just a tradeoff, like anything else. Using a niche tool means that those not in the niche are alienated, but those in the niche are drawn to you/familiar.
Any time someone brings it up, I basically say "yeah, I use this tool, but it really is just a tool that I personally choose, and can see how someone would pick another one. Not everyone wants to fuss with their environment all the time to get their job done." etc. I both genuinely believe this and think its a disarming POV.
Really, at this point in my career, I have a massive quantity of legacy knowledge that informs my choices. Since I know emacs lisp, and have already expended the effort to learn and use it, it continues to be worth my while to work in this environment. For someone who doesn't have this legacy knowledge, their value calculations won't work out in the same way.
I suggest people learn the basic movements and use whatever editor they want with the vim extension. To me that's best of both worlds and what I personally use
Funnily enough, the author says that "all the people who do use Vim are completely insufferable" in the third paragraph. Maybe the author was trying to demonstrate that.