I add turmeric to a tea that I drink several times, daily... but have never put it in milk
nor have I ever heard of "Golden Milk" before.
But hey, as I often say, "If it works for you, just go with it. No need to justify it or whatever."
I've heard of it, never tried. I put curry powder on my boiled eggs and add curry powder or plain turmeric into eggs mixed with egg whites. It turns them back to yellow.