Your question is the answer. Because it's the new IT thing. Like any trend, everyone jumps on it - and like most trends, it will probably fade in a few years in most places, replaced by whatever is the next IT thing.
That said, I had Filipino neighbors and had a few desserts and dishes with them long before it was a U.S. trend - when it started to pop up lately at bars and bakeries, I was surprised to see it again but without the Filipino connection.