Signaling is what's activating the fork though.
Yes, but the fork is not yet being implemented and we're not seeing any major differences beyond some pools stating their intent of giving their hashing power to Segwit, which is exactly what "pre-signaling" is according to the Redditor's definition.
It's not really something that I'd expect to spread within the community unless everyone starts calling the signaling we see "pre-signaling" but it has potential.