Yes, and if you go to a coffee place in the US and ask for a "chai tea", you'll get a drink made with black tea, spices, and steamed milk.

That’s not a given in many coffee shops. Adding spices makes it “masala chai”, which some sell as a separate drink. Some don’t put spices and call it “chai latte”.

So the usage is all over the place.

> In India, chai specifically means tea with milk.

Citation needed with the part of India referred to here.

See second sentence in https://en.wikipedia.org/wiki/Masala_chai:

> Masala chai is a popular beverage throughout South Asia, originating in the early modern Indian subcontinent. Chai is made by brewing black tea (usually CTC tea) in milk and water and then sweetening with sugar. Adding aromatic herbs and spices creates masala chai, although chai is often prepared unspiced.[2][3]

just call it a chai latte piss off everyone