Gentoo can be good if you desire some very weird or exotic configurations or just want more granular customisability that binary DIY distros don’t offer. The way it’s built allows that in a way that makes it easier there. If you don’t really need that and aren’t a fan of the build times, it won’t hurt going for something like Void or Arch which are also DIY distros but all-binary so you don’t need to worry. (unless you use xbps-src or the AUR).
Funnily enough, someone actually did get arrested for allegedly building a Gentoo-based distro for ISIS.