Well it is actually an advertisement disguised as an article so that may have something to do with it.

This is just an advert for a paid service. And I would not recommend this service to anyone, these are not common ASMR triggers at all they are mostly relaxing sleep sounds like rainfall. Just search youtube if you want to fall asleep to rain or the ocean.

My gf's dad has one in his basement. It's Kinda weird but I've always wanted to try it.

You weren't? The gun work is amazing, the film was one of John Woo's inspiration for Hard Boiled.