The benefit for HOA-bound Hams is huge. Low-power and modest antenna requirements. Most stealth antennas would do OK with 10W max. Granted it isn't like having a traditional rag chew or even a short conversation, but for people who have modest shacks, it's a way to actually do some serious DX. Won't replace other modes, but it is getting really, really popular. Can't wait to see the next WSJT-X release candidate.