I think it's a question of how sharp the tool is, and how 'idiot-proof' it's been made. Ubuntu is as idiot-proof as Linuxes go, but the more knowledgeable you get the more you find use for a sharper tool that fits your domain requirements better.

Debian is molded to the server domain pretty closely; Red Hat / Rocky is ideal in regulatory environments; Alpine when the priority is to be lightweight and reliable; I run Void on my personal machines because it's the most BSD of the Linuxes and stays out of my way when I need to do weird stuff.

If you're a beginner, you can append 'ubuntu' to your google searches instead of 'linux' and get an answer that makes sense. You'll know when to move on from ubuntu when you have to search 'foo bar linux' to get a usable answer.