IMO It's mostly about the mindset.
If you realize that you can basically do anything on any general purpose distro because they're all just distributions of the available Linux-compatible software, you're not a noob anymore.
The effort to achieve what you want can be higher on some and zero on others (if that thing already happens to be pre-installed and configured to your liking).
But if you've decided on a distro you like, you always have ways of accessing the software that's missing out of the box.

I'd say, you're not a noob anymore if you know basic command line best practices (like not copy/pasting commands with "sudo" in front off the internet unless you know what they do), can parse a man page, and know how to find and install software that's missing in your distro's repos.
That being said, it's perfectly possible to run Linux without using the command line at all, nowadays.