Has St. Lucia always been so popular?

I am curious as to why St. Lucia (specifically the Sandals resorts) is so popular as a honeymoon destination and if it was always that way. It looks amazing but curious as to why lately it seems well over 50% of friends I follow on Instagram go there for their honeymoon. I assume it’s a combination of proximity to US, all inclusive deals, and advertising by Sandals.