An interesting discussion that challenges our perceptions and understanding.
I don’t mind flavoured teas. Although those I find most interesting typically include the dried portions of other ingredients to add to the flavour experience.
EG Stockholm’s Blend, and some other more local blends with a strong ginger influence.
I do wonder if a liquid extract has been used to produce the added flavour in the tea, whether it is a direct filtrate from a pressing or has been chemically processed in various ways. How a product has been processed can make a difference to consumers, irrespective of its origins. To note community topics questioning the same brand of tea for what is a flavour or processing related concerns.
‘Minty taste in Twining English Breakfast Tea Bags - #7 by Gaby
‘Twinings Australian Afternoon tea is NOT an Australian product
To note Twinings is promoted by the brand owner as a premium product.
Typically 1.5gms to 2gms of tea per bag or cuppa varies with blends. $13.50 regular price at Woolies for 100 bags of English Breakfast or 80 bags of Earl Grey. One formula suggests $67.50 per kg of leaf or more expensive. Although depending on the week their product range can be discounted by up to half price. Suggests the premium is not so premium if that is the real price.
For one seeking greater choice and premium products, perhaps one of the local tea speciality suppliers offers greater choice and equal value. First flush Darjeeling 
might be a notable exception, although unlikely to be found in a Twinings tea bag.
