That's no better than just going into the community tab and just looking what threads are there though, it won't make the threads any more visible to casual readers who skim thread titles in the main boards.
Guess the idea was to make people reading the main boards more aware of the fact that there are threads dedicated to specific gaming platforms that aren't in the main Gaming forum. So maybe they would take a look at the community threads via the sticky.
It may seem stupid but if we're stuck in Community, anything that can help get the word out is better than nothing.