It’s a term that goes back to the cold war. There was a strike and the Soviet Union ended it violently by rolling tanks into the city. This put communists all over the world into a bit of a dilemma: on one side of the conflict was the working class making their opinion known (a communist value) and on the other the Soviet Union (the good guys). So whose side should they take?

It was British communists who coined the term “tankie” for those who defended the SUs actions to brand them as “fake communists” who are more interested in identity politics (the good guys did it, therefore it’s OK) than the plight of the working class.

https://techcrunch.com/2023/12/11/tumblrs-fediverse-integration-is-still-being-worked-on-says-owner-and-automattic-ceo-matt-mullenweg/

https://techcrunch.com/2023/12/11/tumblrs-fediverse-integration-is-still-being-worked-on-says-owner-and-automattic-ceo-matt-mullenweg/

You link to communities like this: !wikipedia@lemmy.world

Plasma is the desktop environment developed by KDE. It’s for example desktop environment used by SteamOS 3.

As to how you learn this stuff: looking things up on the search engine of your choice helps. Not trying to be rude here, but you could have found all of that out yourself by searching for “plasma Linux”: https://lmddgtfy.net/?q=plasma linux

Also the arch wiki. There you can find all the info you could ever ask for.

" just use Linux" is a great piece of advice for most people because most people don’t care about the OS they use. They just use it. And they shouldn’t need to take a course to do so. Of course you are missing some things with this.

If you want more than you will need to go out and actively look for it

The universeal blue family of operating systems also comes with Homebrew, the Linux port of the popular Mac package manager. The idea being that flatpak is for GUI apps and homebrew for the cli