Freemasonry has a boom-and-bust cycle that tends to skip a generation. We seem to be at the bottom of one of those cycles, where there's a noticeable uptick in new membership, but the old guard are still dying off at a rate higher than new members are joining in some areas.

This isn't new. In the 19th century, there was a period where the Fraternity very nearly went away in the US.

This is why a number of buildings (expanded to in the last boom cycle of the 1940s-1960s) are now abandoned. I fully anticipate that the 2020s will be an amazing decade for the Fraternity as the millennials have been showing a profound interest in such organizations.