I only have 2 data points, but my mom in the southeastern US (in her 70's) and all of her friends have started playing and are fully addicted and the same seems to be true at my golf club in Inland Northwest. Maybe it's getting a toehold? (in a very non-HN demographic)
Yes its become a hot game among socialites. Complete with a SAAS subscription for the “yearly cards” and a marketing push to play the sanctioned version.