I will die on this hill: parent is correct - the ability to manage a Linux server should be a requirement to work in the industry, even if it has fuck-all to do with your job. It proves some basic level of competence and knowledge about the thing that is running your code.
If it's so easy, surely it's no big undertaking to explain how one self hosts a fully secured server. No shortcuts, no "just use the usual setup" (we don't know what it is!), no skipped or missed bits. Debian to Caddy to Postgres, performant and fully secure, self upgrading and automated, from zero to hero, documenting every command used and the rationale for it (so that we may learn).
Or is it perhaps not as simple as you say?
What you have stated requires more knowledge (especially Postgres). You’re not going to get it from a blog post, and will need to read actual source docs and man pages.
This whole thing is merely cheap online snark masquerading as wisdom. No, not all SWEs know how to maintain Linux servers, and many (most?) SWE roles have all of zero overlap with that kind of work. If businesses could fire all their expensive server admins and replace them with some college kid and a $5 VPS, they would long since have done so.
If this is anything more than poseur snark, put your money where your mouth is and either write a comprehensive resource yourself, or at least compile a list of resources that would suffice for someone to be able to securely run and maintain a live server in production. No, not Hello Worlds, actual prod. Then, when next this comes up, link us to your guide rather than just spraying spittle on the plebs who lack your expertise.
Do something more constructive than low effort snark.
Claim one: setting up unattended-upgrades, SSH keygen, and automating cert rotation is trivial and easily automated.
Claim two: you should know how to manage a Linux server. Here are docs.
https://www.man7.org/linux/man-pages/dir_all_by_section.html
I agree with Node.js version deprecations being a huge problem and personally advocate for an evergreen WebAssembly platform for running apps. Apps should run forever even if the underlying platform completely changes, and only require updating if the app itself contains something that needs updating.
The speed. Imagine the performance. There are plenty of mature C++ web server frameworks, it's really not difficult. If you're afraid of C++, you could choose something else. Rust if you're insane, or golang if you're insane but in a different way.
Anyway. Nginx is not going away, so the argument is a bit silly. "What if js went away". Same thing.
I felt more comfortable maintaining a VPS back between 2005 and 2015, but at that point attackers were dramatically less sophisticated and numerous and I was a lot more overconfident/naive. At least for solo operations I'm now inclined to use a PaaS… the exception to that is if said operation is my full time job (giving me ample time to make sure all bases are covered for keeping the VPS secure) or it's grown enough that I can justify hiring somebody to tend to it.