32 GB is a finite number (as is any amount of RAM in a physical system), so if a memory leak is eating 1 GB/min, can you figure out how many minutes it takes to crash a 32 GB machine (that the OS & AV are probably using 30% before WoW is even launched)?
Saying how cheap memory is indicates you don’t understand what a Memory Leak even is.
It’s a real issue, that Blizzard has acknowledged and is trying to fix.