I prefer to look at DOS as "stable."
I don't see the connection. Is this a reference to something from the 80s?
This superposition of statements is set against the backdrop of the tech idiom, "friends don't let friends" followed by some activity. [1]
This tech idiom is based on a decades-old advertising slogan, "Friends Don't Let Friends Drive Drunk," by MADD, Mother's Against Drunk Drivers. [2]
[1] https://www.google.com/search?q=%22friends+don%27t+let+frien...
Not necessarily! http://freedos.org/
I used OS/2 Warp 4.0 for a bit, when researching for my book on Windows NT. It's certainly not "DOS", or not only, as it's a protected memory kernel with DOS userspace. But it might be a DOS, or a direct descendant that has managed to swim all the way to 2022.
https://en.m.wikipedia.org/wiki/EComStation
And of course https://www.freedos.org