[laumars]

> If you use Linux with systemd or without is a significant difference, which is probably as big as switching between BSDs.

I did address the init daemon point. With Linux distros you're still using a common kernel upstream (ie Linux) which all Linux distro's share. That's not the case with the BSDs. You're also sharing the same GNU coreutils which 99% of Linux's share, BSD's often have their own. The kernel is really the key point here though.

> The name of my operating system is "Ubuntu", not "Linux".

Technically it's neither. "Ubuntu" is the distribution name. "Linux" is the kernel name. I don't much agree with Richard Stallman that "Linux the OS" should be named "GNU/Linux" but from a technical standpoint it is a more accurate OS name than either of the two suggestions you raised.