Apparently you can use the USE FLAGS to determine what stuff you want and it’s meant to be even more lean on resources.
True and false; the “something special” in Gentoo is that you can tailor it to fit to your needs, and as far as I know no other distro comes even close - maybe the now almost defuct Funtoo. The “it’s more lean on resources” always seemed to me like a strawman people don’t like it came up with to diss on Gentoo.