Might be a patience thing too? Most cookies will take some time to really absorb a meaningful amount of milk. Like Oreos take a good 10 seconds submerged. You can see bubbles as milk replaces air in the cookie.
There are some rare cookies that will absorb the milk way faster, like Keebler Vienna Fingers will be soaked in like a couple of quick dunks.
It adds to the creamy taste
it must for other people because people swear by it
For me though, it just tasted like I ran it under tap water.
Might be a patience thing too? Most cookies will take some time to really absorb a meaningful amount of milk. Like Oreos take a good 10 seconds submerged. You can see bubbles as milk replaces air in the cookie.
There are some rare cookies that will absorb the milk way faster, like Keebler Vienna Fingers will be soaked in like a couple of quick dunks.