Modern vs Traditional Ayurvedic Practice

Nowadays many Ayurvedic practitioners will type you (say, as being "Pitta") and give you a list of foods that are beneficial for you, negative for you, etc. I was speaking with somebody recently who said that this is not in the spirit of what Ayurveda was created for. She said that a true practitioner will never write a list down, rather she will tell you verbally what you need. Why? Because your body is always changing, and its needs change with the weeks and months and seasons. What is true now could change soon, in which case you would not be paying attention to what you body really needs, and rather be following a list as your health bible. I don't know much about Ayurveda but this rang true with me. I'm curious to know what others who are more acquainted with Ayurveda feel about this.

Thanks!

Nicholas