[man8alexd]

> So not being able to mark apps processes as kill me first and leave others like ssh bash up is a missing feature.

systemd OOMScoreAdjust has existed for at least a decade. /proc/*/oom_adj since Linux kernel 2.6.11 - two decades. cgroups are also two decades old. SSH by default has OOMScoreAdjust=-1000 and is entirely protected from OOM.