I'm not a fan of Gnome, they consistently have made questionable choices in my eyes since they shifted to their touch oriented layout circa 2010ish. While I personally dislike the software, I recognize its merit and that for many its the right choice. This is to say, the Following is NOT blind gnome hate. Additionally, I love systemd, I understand the philosophical issues with it, idgaf I like it.
This is bad. Like, big bad bad. The reason systemd is objectively fine as a monolithic giant Swiss army knife of software is because if people don't want to use it they can replace it with something else. This move would require custom forks, moving forward, of gnome to retain interoperability with runit or with init, or with any selfspun init system.
The reason systemd isn't a bad thing is that people don't have to use it. This takes that choice away from anyone wanting to stay on gnome.
(I am a 20+ year Linux user and fan of systemd)