About 15 years ago I received the advice, "If you want to be hacker, stop using Windows and start using Linux." Today, I am well aware that this is not the only path to enlightenment, but I count it as some of the best professional advice that I have ever received. This is colored by the direction my career has taken me: the technologies I use are open source, and that fits much better into the Linux box than others.
It's also not about writing code. Sure, when using Linux exclusively, sometimes you might have to hack together a little script to make your computer do what you want, but that's really not necessary, especially in the year of our Lord 2023. It's about tooling. So many younger devs that I meet still have irrational fear of the command line. Inability to use built-in documentation (like manpages), and again a fear of trying (because web browsers exist). Worst of all is the lack of understanding that these younger devs have of Unix permissions. We all know the guy who just pastes `chmod -R 777 .` or something from StackExchange. Since most of our production software still lives on Linux, knowing the proper way to configure these environments is valuable (though unfortunately undervalued, in my opinion, since improper configuration can still "work fine").
Using Linux full-time for years will make you more than comfortable. And yes, it probably will take years. You may come to prefer the terminal to most of the GUI wrappers provided in desktop Linux distros. You won't even notice when you come out the other side. You'll realize that everything only seemed like it was 43 commands away because you only knew 2 commands to begin with. Typing the most common commands will be second nature and take less time than moving your hand to the mouse. Anything that does need to be reasoned out and typed slowly you will learn to embed in a script, with comments so you can remember how it works, and that will save you even more time.
Most importantly, in the end you will have the confidence in your abilities to write long, condescending comments on Hacker News. I kid of course, but you will no longer fear tooling (though you may grow weary of it - looking at you nodeJS), and I truly believe that's a more important and difficult skill than reading and writing code of all sorts.
