Fedora using /tmp as tmpfs is going to cause problems

I'm noticing that lots of software assume that /tmp is a real HDD hosted directory. For example hadoop uses /tmp/hadoop-user as a staging area and might write huges files there. Some of the CD to flac converters I use seem to write large wav and flac files into /tmp at least for scratch area. Since Fedora is now putting /tmp on tmpfs, this comes right out of system memory right?

Should software be changing to placing large temporary files into /var/tmp ? /var/tmp is on the hard drive and it does get flushed if you have tmpfiles flushing set up via systemd-tmpfiles