[bbbrad]

Yep, this is a huge driver of many of these youtuber's traffic.

[Houshalter]

I doubt it. That video had 90 million views. That's an absurdly huge number of views. Searching for ASMR, the subreddit is the first thing that came up, and the front page items have an average of 5 upvotes, and 80,000 subscribers.