Some people just want to know exactly what is running on their system, and how it works. That's one of the reasons I don't use Windows.
(I do confess that I never took the time to learn systemd properly, but I highly appreciate it for introducing me to the BSD world).
Then again I just bought a new MacBook air and they keyboard gave out after two weeks and it gave me a rash.
Can't win at all.
He tried other open source operating systems and didn't find them acceptable. Sure, there are Linux distributions that have formed to avoid systemd, but it's not clear how long any of them will last.
Mac os isn't exactly unicorns and rainbows either, but there are some benefits of being part of a larger user base, too.
The problem with systemd isn't necessarily how it handles system startup and daemon supervision (although I don't care for that), it's that it subsumes so many other things, and with no technical excellence.