[nullindividual]

> In a single-user environment, where malware is the biggest concern in current times, what difference does it make if it's a process running under a different user or one that is running under your current user that is attacking you?

In these systems, the responsibility passes to EDRs or similar. But neither a $HOME/.tmp or /tmp matter in these scenarios. _Shared_ systems are where the concept of $HOME/.tmp might be more interesting.