OP
So to summarize your article was about upgrading to a minor point release ? Upgrading to a major release is something different and i've seen comments like " i will do a clean install.. at that point .." but surely Arch does that almost every other week so I should be able to do major upgrade as well from cli ?
Yes, this article is about the regular daily updates. Normally you can upgrade from one major version to another but it was an *exception* for 18.04 to 20.04 specifically for *Lubuntu*. There was just too much changed for a regular upgrade path to end up with a stable system.
Normally, you can upgrade to new major versions from the terminal just fine. Just that once, it was an exception. The desktop changed from LXDE to LXQt, and so much changed because of it.
But yes, the rest of the apt-using distros can all do their upgrades just fine from the terminal.
Make sense?