It's funny to me as well. Being initially inspired by Yelp's dockersh I wrote a functional MVP of the same concept around 2 years ago. It used a custom Go sshd-proxy to spawn kata-container backed pods in kubernetes. I used it personally for a very brief period of time, and found it useful as a small timesaver for testing things. I wasn't comfortable with monetizing it though. After seeing a few of these pop up, I realize maybe I missed my chance to be early.
As far as self-hosting goes, it looks like there are some FOSS projects now, eg https://containerssh.io/
Pretending there isn't a difference between "opinionated views" and collaborating with Russian military while spreading disinformation doesn't help you.
The examples you've provided have done the latter.
Stop using indirect language to hide your beliefs.
As of some recent Windows 10 build (edit: 1803 or insider 17063+), curl.exe (need to specify full executable name not just "curl", which is aliased to Invoke-WebRequest by default) is shipped by default as well. I believe it came around the same time as OpenSSH. You'll also find a tar.exe binary.
As far as self-hosting goes, it looks like there are some FOSS projects now, eg https://containerssh.io/