LSF is not a distro. It is a instruction manual and teaching aid. Don’t use it as a base for you main OS. And IMO Gentoo does not really teach you more then Arch does. It gives a bit of flexibility that not many care about (how things are compiled) at a very big cost (of having to compile everything yourself). I would not use either unless compiling things is your hobby.
Sure, try them in a VM if you really want to. But I would not really consider that moving on from your current distro nor do you really need to do that.









That is not in the slightest true. They pay once per computer. And people go through multiple computers in their lifetime. So it is not at all tied to birthrate.
Very few people buy licenses directly. Most people buy it pre-installed with an OEM license that is tied to that computer.