It’s supposed to be more strict about standards… and maybe lighter in resources. I’ve been only testing it. Curiosity driven choice. 😉

Gentoo user here too. I once switched to systemd, but didn’t stay using it for too long. Back then some things didn’t work with systemd. Nowdays my systems use seatd instead of logind or elogind. Some have musl toolchain. It’s just simpler, currently, for me to use OpenRC on all of my setups. But the thing I most disliked with systemd was that it cannot work without journald.