It might be that the title may be clickbait-y, but that is I guess to be expected in this day. Someone reading has the choice to just not interact if that title is too much bait.
The Linux VM has limited availability. I believe it depends on your processor (I have an i5, some Chromebooks have ARM.) It needs to be enabled as a "developer option" and yes, it is labeled as a developer tool, which means it could break. It will not work if you're logged in with multiple users. (Neither will the Android subsystem.)
ChromeOS will not run graphical Linux applications out of the box. I haven't experimented enough with the VM, but it does not have X11, Gnome, KDE, or Wayland dependencies installed; it is a minimal package list.
The Linux CLI runs in a VM (and a container too, I believe.) So you're running Linux in the sense that WSL runs Linux. ChromeOS Linux has limited access to the rest of the system. You need to configure each shared folder, for example.
That's userland. There aren't any Linux drivers to install, uninstall, or corrupt. You can't look through /proc or do meaningful system monitoring that you would find on Linux. There's no crontab or any scheduled tasks, for that matter.
I'd say it's one notch up from your Android phone in the hierarchy of "what is Linux?"
The point of most publication titles is more to grab attention than merely a dry summary.
The point of this one was to grab attention by being funny and curious through being seemingly illogical.
The readers are expected to be humans not robots. Humans understand and enjoy this. They even have a term just for it. You may google the term "wordplay" for more information.
I agree with you. It's just that this case is unusual.
> The point of the title is to summarize the article.
This title does just that.