This!
I've had a Snapdragon X Elite laptop for 2 years, constantly trying to get Linux off the ground on it. Didn't happen (well, technically, toward the end of that period, there was an unsupported port of Ubuntu but it lacked half the drivers). And yes, when I bought it there was a very similar announcement from Qualcomm promising first-class Linux support. So I wouldn't gamble on it (especially considering that prices are crazy) until there indeed is a supported distro.