Exactly. You can use Ubuntu in a noobish way, or you can do crazy things with it. It's not the tools, but the craftsman that makes the difference.

That said, distros each have a niche, so find the one that's closest to the types of problems you want to solve. For example, if you're making a kiosk, you're probably better off pushing out your own images, so a distro that's designed to build small images is probably desired over one that seeks to pack in every library and application under the sun.

If you don't know what you want, pick something well supported and dig in to whatever interests you. Want to learn systemd? Pick a distro that uses it and write your own service files (e.g. maybe a Minecraft server, or perhaps synching). Want to learn to build software yourself? Grab a tarball from the project's page instead of installing through the package manager. And so on. If you start from something unfamiliar, you'll have to learn a lot of irrelevant things, which may not be what you want.