That article is just sensationalism with no scientific basis whatsoever. They seem to be concerned with hearing loss. As though ASMR is known for having loud sounds. No, this article is nonsense.

The only danger with ASMR is relaxing too much and falling asleep.

I would argue that ASMR gives us many benefits. Stress is one of the leading causes of illnesses and death. And ASMR directly decreases stress.