I know aleph-null guys. All in the same family. Parents were lazy and named all their kids after the positive integers. 42 is my best friend.
For extra fun, you can name your variables using solely Unicode invisible characters (e.g. non-breaking space) so they’re impossible to visually distinguish
It depends on the role. My first job was doing manual QE on Windows, and knowing Linux wasn’t much help at the time, but it did help me transition to a coding role in the same company a year later. I’m now doing platform engineering at a major tech company, but that has a high barrier to entry, which I suspect is the case for most roles that are Linux-focused. If you’re trying to get your foot in the door, I think you should look at job profiles for low barrier to entry roles (e.g. tech support) and try to work your way up.