Alt-init distros exist but it's only a matter of time before either they're screwed or age-gating goes down to firmware or hardware level.

Just use something simple with systemd. The Linux community is its own worst enemy, in inviting people to come to Linux because it's so simple and beginner friendly, then the trap snaps shut and they tell you to pick a distro and all you have to do is decide on either gnome, plasma or cinnamon, and between arch and debian and ubuntu, and between snap and Flatpack, between Vim, Emacs, nano, and micro, between Wayland and the other one, between systemd and violent self-fellagelation, and whatever you choose, make sure it's FOSS and exactly what the next person on the forum used and as pure as the driven snow or you'll be bullied, belittled, and trolled by egomaniacs, elitists, and gatekeepers until you fawn like a thrashed housewife who 'only gets hit when she fucks up', or you give up and install windows again.

Just use whatever works for you, makes your life easier, and avoid the Linux purity circlejerk.

If you don't know what systemd does and you aren't affected by this, use it. If there's closed source software you wanna run, run it. If you want to install a snap, do it. If you like using VS code, install it on your Linux, it works great. You will never be pure enough to satisfy the Linux community.

Most distributions use systemd but there are still distros and other unix-like operating systems that are using something else. However, they are not "user friendly" and will probably not be what most people are looking for.

Slackware uses its own init system and never used systemd but it has the reputation of being difficult to use. Gentoo also lets users choose between systemd and OpenRC. Alpine Linux uses OpenRC too. There's more than a dozen distros not using systemd, but again, probably not what most people want to use. It's also possible to replace systemd with OpenRC on some distros, but it possibly, probably, might cause some quirks.

Otherwise, there are other unix-like operating systems. Debian GNU Hurd also has its own init system but it's not using the Linux kernel, so it's a different beast. OpenBSD and FreeBSD also have their own init system, but not Linux. And AFAIK there's no such thing as modern gaming on those.

There are ways not to use systemd, but realistically speaking, it will probably not be worth it unless you're really militant about this. I started with Slackware at the end of the 90ies, I know how to compile a kernel, and tried GNU Hurd at some point, but I will not change something unless it's really implemented deeper into the general software. It's frustrating that the systemd devs are "collaborating", but we'll see what happens after a few rounds of updates.

SystemD isnt exactly a program but more of a group of projects, the only "core" SystemD software on most distros is the init system... Which you can run completely without SystemD's UserDB system (the part being talked about in the post).

Basically this means you as a user dont have to do anything but switch away from projects that depend on SystemD's UserDB (like Gnome), not SystemD as a whole

However if you do want to move away from SystemD as a whole you can replace your init system with another one, gentoo's wiki is a good starting point for learning a bit more: wiki. Personally I love using openrc but of you have no need to touch init files... Dont switch