Not the user you asked, but systemd has been controversial for a long time, long enough that I see the topic come up about once a month on various forums. There's a few folks who even consider it a bit fascist, I guess.

I don't particularly mind it myself, but I get where some power users would get irked by it. This article does a decent job of explaining why; https://www.infoworld.com/article/2251761/linux-why-do-peopl...