Depends on your configuration/distro. OOM killers aren't really used on the desktop because swap makes more sense, but you can certainly add one if you're using a resource-constrained machine.
> Most distributors don't enable it by default for a reason.
Every Linux system configured for overcommit (every major distribution out of the box) will invoke the kernel OOM killer upon demand. There is no such thing as distributions not "enabling" this thing. You're talking about things like systemd-oomd, which act as a layer on top of the kernel OOM killer.
