It means that working in the terminal, you can use short commands, and when you write a long-term script, you use the long names so that the script is more readable.
What I find great is that flags also have aliases that are standardized across commands.
This is why I'm annoyed at this meme. It just stems from ignorance.
But I do get what you're saying and think it's a common meme that's often unhelpful
I don't use it, because I was Mac/Linux at home and Linux at work for so long - only now do I have a reason to.
I love powerful. I've used it for a long and even though I primarily work on macos/linux now, I install powershell core on everything.
That said, I _started_ using it because I was working on a windows box doing C# and managing windows servers.
There's just not a compelling reason for a dev to learn it outside of personal interest, and I think that's a completely legit mindset, since we all have limited time. I'm even fine with misconceptions--we all have them about something--as long as the person is being a decent human about it (which is why I've enjoyed this thread/comments)