A what3words employee saying what3words is a good thing? Especially one whose position is literally called Chief Evangelist[0]? How shocking.
Conversely, (as another HN user pointed out), OpenStreetMap's opinion of what3words is quite negative: "what3words is a commercial, non-open, patented location reference schema. Open data advocates (such as the OpenStreetMap community) would generally advise against adopting it at all."[1]