There are some massive intrinsic advantages of the CLI though, that apply for everyone, not just leetcoders:

• The terminal can remember everything you ever did. Forgotten the command you wrote 2 months ago? You can do a search for it with a tool like fzfand run the exact same command again.
• Communicating with others. GUI programs require step by step instructions, often accompanied by screenshots while CLI may be copy/pasted.
• Combining programs together. There are a few different techniques for combining CLI programs to search/format output, use secrets without ever having them in the clipboard or on disk, monitor something frequently/constantly etc etc

So while I agree with you that there's plently of elitism around the CLI, you do yourself a disservice if you try to avoid it.