Comment by amano-kenji

Gentoo Linux became a lot easier with binary packages and binary linux kernel.

You don't need to customize it, but you can still get packages from third party overlays.

The customizability is available when you need it or want it.

Learning to use gentoo's basic functionality doesn't cost a lot of time, and I recommend utilizing only the basic functionality in most cases.

Just stick to the basics, and you will be fine.