I once got a teapot with a few tea bags inside and one free water refill, I live in Poland and tea is rather warm/hot drink here
Even in hot countries people drink hot tea, it's a custom in Turkey for example, in north Africa people drink hot coffee and it's surprisingly effective in fighting the heat
I used to live near a cafe that did Turkish coffee, your comment has made me realise how much I miss that place. I live in a big city now, I can probably find a new place
I think the difference is that the south-east us is humid as hell. You sweat and it doesn't evaporate ever. The only way to cool down (outside or in the past) is to drink something cooling. Air conditioning was literally invented because typical coolers (swamp coolers) worked by evaporation, and it just didn't function in the south east us.