This isn’t really an important point or anything, but I always find it odd when people bring up sysv init when talking about systemd. That’s kind of like arguing that people should switch to Linux because Windows Vista was bad. It’s not wrong, exactly, but it is a very weird thing to bring up in 2025.
Systemd is a good init system. Better than any of the alternatives, although they’ve also come a long way since systemd first came around. It’s also a weird interconnected mess of a thousand other things that probably shouldn’t all be lumped together into a single project. Half of them are absolutely vital to the vast majority of Linux systems, and half of them are unused and neglected and no one has touched them in years, but they’re all stuck together in one weird project for some reason.
That’s kind of the exact same sort of situation xorg was in 20 years ago. I am concerned that systemd is going to turn into the next xorg, but really those concerns are the only reason most people should consider an alternative. If you don’t care about that, you probably don’t need to worry about systemd.
I mean, unless you really like one of the weird bells and whistles btrfs supports ext4 is just faster and more reliable. If you don’t have weird power user needs then anything else is a downgrade. Even ZFS really only makes a significant difference if you’re moving around gigabytes of data on a daily basis. If you’re on a BSD anyway feel free to go for it, but for most people there is no real benefit. Every other fancy new file system is just worse for typical desktop use cases. People desperately want to replace ext4 because it’s old, but there’s just really nothing to gain from it. Sometimes simple and reliable is good.
Linux Mint has an OEM install option that does what you want, I think.