Bob is right, here. In order for something to be a genuine *tea*, it has to actually have tea leaves in it.
If it doesn't have tea leaves, it isn't a real tea. They can call it that if they want, but what they're really selling is an infusion.
If it doesn't have tea leaves, it isn't a real tea. They can call it that if they want, but what they're really selling is an infusion.