Arch is a rolling release that gets the newest software once it's available. Ubuntus is Debian-based and it's also following the principle of stability over modernity so there's a big difference between how recent software you're gonna run on those two types of distros. But if you want to try the rolling approach you doesn't have to go directly for arch, you can use some Arch-based distro like Manjaro. I know there are also Arco, Artix and Garuda that are arch based but I don't tested them. You could use them, experience pacman and aur but without struggle of setting up arch and once you get comfortable you may want to give arch a try
SkierniewiceBoi
Yea I put it into the same category with manual arch/gentoo installation. It's definitely worth to do one time and understand the process. Then it's up to you whether you want to have stuff that just works out of the box or you find pleasure in tinkering and customizing the environment along with trying to get things done
Yup that's also true, I've hit the wall multiple times when trying to use vim/emacs. Now I'm in neovim and feel like I get a better understanding of buildsystems but I won't say it's something that everyone should start with. I don't know what the C/C++ intellij is though. On windows it's probably visual studio. On Linux maybe vscode but I'd say if op wants to try some morw serious ide then clion may be a better choice
There's a learning experience to it though. When coding in intellij I'm just using writing some java without deep understanding how the build system works ans what's done underneath. Setting up some nvim with lsp forces you to focus more on the whole process so I'd say it can be beneficial
There's some revenge bedtime procrastination going on sometimes that affects my sleep schedule so I guess I could sleep a bit more