It's not a new thing, it's always been a popular choice in the enthusiast community.
What's nice is finally the market is catching up with the manual (again).
It used to be the performance choice.
When the automatics/twin clutches got good in the 2000/2010 era, a lot of performance cars preferred the faster/easier transmission, and the people spending new-car money on performance cars opted for it (or were forced into it).
As with many things, the new-car-money people aren't a cross section of the enthusiast community, they have different preferences. Some want the latest tech, some want their expensive purchase to be easy to drive every day, etc.
But the used market has always valued the manual more highly than the new car market, and the lower-and-lower take rate of the manual in new cars means the values of the manual are stronger than ever. However, I can't remember a time when an automatic or twin clutch pulled more $ on the used market.