[the_why_of_y]

If there are really "dozens of init systems" out there that "do much more, markedly better than systemd, and are modular" how come exactly zero of them have been adopted by any Linux distro of note?

[e7620]

I've been hearing this for decades: If Linux and *BSD are better than Windows, how come exactly zero people have made the switch?

Except they've been adopted, systemd has been mandatory only in some bigger more commercial distros.