Well, systemd, including logind, which was incredibly unstable for me under manjaro (basic session management was flaky).

Devuan uses elogind, which is a fork of logind that doesn't require systemd. I haven't noticed any problems with it.

> ... what other Poettering software is in normal Debian?

A rube-goldberg version of SSH that somehow depends on many things that should be totally unrelated to SSH. Because ofc Poettering needing to mess with everything does need to have systemd notifications available from SSH.

This excuse allows to link many libs and pretend the backdoor attempts are unrelated to systemd, like the liblzma one.

Not of course it's an excuse that doesn't run very far seen the following undisputable fact: the XZ backdoor only affect systemd-enabled SSH. Ouch. Facts do hurt.

I cannot wait for the day a good hypervisor comes out for Linux that runs perfectly on a systemd-less Linux distro, like Devuan (I already used Devuan, but not as an hypervisor).

Basically "Proxmox but systemd-free". I know I've got the FreeBSD+bhyve option too. And at long last I'll be systemd-free again.