@ryo I just never bothered learning shit like Slackware or Gentoo. I haven't even fully mastered bash and I have been using Linux in some form for over a decade. Most of my computer knowledge has been going towards game development which is all done in an environment that is frowned upon in the Linux community (.NET/Mono).
I only noticed that what is considered "beginner friendly" or "advanced user" is decided based on how much bloat is pre-installed out of the box (the more bloat the more "beginner friendly"), and whether the installer is done using Calamares or something else.
But nowadays it's very easy to get used to Linux, even the "hardest to use Linux distro ever" can easily be learned in a matter of an hour or 2.
In the end, the best Linux distro is whichever you're the most comfortable with.
What truly matters is the desktop environment or window manager.