It helps IPC performance in some ways - also makes sure nothing in there persists longer than intended.

You might consider these common mount options for a little extra security:

    noexec,nosuid,nodev

While /tmp is a great world-writable place, these restrict it from being home to executables/devices -- common sources of abuse

I picked these up through some compliance benchmarks, commonly applied to /tmp -- I'd exercise caution with these elsewhere, they're fairly restrictive

Or just skip that install to media stuff altogether, and run from some live distro booted into RAM, and running from there :-)