I've been using VS Code since day one, and I have zero interest in Remote or LiveShare. I can definitely see how they'd be useful in certain environments, but they just have no use to me.
Not that they are critical or core, but that they are, in the words of the original author, "the best parts of VScode." All the core and critical features of VScode exist in every other editor. LiveShare and Remote are, as far as I and the author can tell, not replicated by any other editor, and are therefore (subjectively) the "best parts". Whether or not you know anyone who uses the features is irrelevant.
The person I was replying to used the words "critical" and "core".
As to best (admittedly subjective) if they are so good I'd think that one of the 100s of devs I know depend on them.
The only close one was Remote - which other editors do too - When I showed that remote drops code to the far end machine we determined that to be too risky - and went back to sshfs.
Also, if those extension are so "best" why hasn't a replica been created? Or why didn't any other editor have them? It might be those extension are not so compelling.
Also, my previous favorite editor (jEdit) had remote features back in like 2003 - maybe earlier.
I don't agree with the word choice of the parent, but I think the argument stands if you replace "critical" and "core" with "best". That's why I chose to re-reference the original article.
I'm curious if you've used the live share features personally, and if you have if you've found value in them. I suspect many devs do not like collaborative programming in general, and so may never use them or like them if they have. As someone who thoroughly enjoys collaborative programming, I can tell you that these features are extremely compelling. It's way easier to tell your designer friend to boot up VScode and click on a link to your live app running locally than almost any other solution I've found. It also makes pair programming extremely easy.
I used to use vim and now emacs for everything. I've also used JetBrains products for years. The only reason I ever boot up VScode is for those features. You just can't replicate the experience in any other editor as easily. Every other feature of VScode I've found a similar or better solution in every other editor. I'd be interested to hear any other feature of VScode that you think is as compelling, without parallel in any other editor. I suspect there are few/none.
I love pair programming. I teach loads of juniors, that's how I know so many devs (that and hiring/recruiting).
So, the features of LiveShare I found are better handled with external tools. But that is mostly because I don't want anyone to become to dependent on one tool. How can I LiveShare between emacs and Sublime? WebRTC screenshare+A/V works a treat, across editors and systems.
I don't find VSCode, or it's extension super compelling. But it is very nice.
I think the feature I like the best, built in, is that debugger - that's easier/smoother than Atom, or jEdit or any others that I've used in the last 20 years. It's like what was available in Visual Studio 6 (c1999).
If Microsoft wrote a proprietary extension to emacs that was so compelling many would consider it to be the "best" feature, I think devs would complain. Emacs is way more FOSS than VScode claims to be, so that would be an even worse affront to the philosophy of the editor and community. Maybe you're right about the JetBrains products, but to my knowledge they don't market themselves as open-source to the extent that VScode does.
