systemd and pulseaudio are by the same guy (avahi too). He just writes shit software that sort of works.
This is of course about tradeoffs and about the complexities of the problems you're solving, but his software is full of choices that only make sense if you priorize elegant code over elegant software only to then grow into something that is neither.
I think he's well suited for his new employer (Microsoft).
[1] (in German) https://cre.fm/cre209-das-linux-system