This may be an admittedly hot take for the average GCAer, but Instagram has singlehandedly caused more people between the ages of 15-40 to care about golf architecture than arguably anything before it.
This is especially true for restoration efforts by Doak, Hanse, and others. It’s giving the average golf fan access to photos of Doak’s work at Pasatiempo, Bel Air, Essex, Somerset Hills, etc, and Hanse’s work at Myopia Hunt, LACC, The Creek, etc. As well as new work at Streamsong, Ohoopee, and so forth. And perhaps the greatest Instagram darling of them all - Sleepy Hollow (their membership director should pay Jon Cavalier/LinksGems royalties for his photos of 16 that set the internet on fire).
And, most importantly in my mind, Instagram is doing an exceptional job of teaching youngish golfers which holes/courses are great, which are architecturally significant, etc. You can surely make the argument that it favors visually appealing golf courses and holes, but that argument (see every discussion about Pebble Beach) existed long before Instagram. Photos posted on Instagram simply mirror what we see with our own eyes.
Instagram has been great for golf course architecture, and it thrives in bringing GCA to a more mainstream audience.