I just found about this distro, which is relatively new (2021). Its specificity is that it doesn't features any GNU software by default, which I find interesting.
Just use Alpine. Chimera uses Alpine's package manager anyway. The only reason you havent heard about Alpine in this context is because they do not claim they are doing anything revolutionary, they just strive to make a great distro.
I already used alpine for a few years, before containers were a thing. I heard about it exactly because it was advertised as a distro without GNU components, which was revolutionary at the time.
You sound weary with that kind of comment, I wonder what bother you so much about seeing a new distro pop up ?