It's the same people who think they need to filter water in places like America or Europe.
I drink chilled tap water. Tastes great and there isn't a problem.
You know what tastes gross to me? Filtered water.
The tap water tasted fine in everyone one of them.
¯ \ _ ( ツ ) _ / ¯
The most disgusting water I taste consistently is from a plastic bottle.
In your defense, there's a big difference between room temp, tap cold, and chilled water. At room temp there is a flavor of water. Chilled with ice or a fridge mutes flavors.
If you did a blind taste test of chilled tap and "filtered" chilled water you wouldn't be able to tell a difference. Consequently, if you did the same test at room temp, you'd find both to have bad flavors.
Also, when you fill a pitcher of water and let it stand, the chlorine evaporates, so you don't actually like chlorine - you always make sure to remove it :)