Garam masala is exactly that, Garam meaning 'hot', masala meaning 'mix' If a recipe calls for Garam Masala, then that's what it should mean. It shouldn't mean 'curry masala' as that is a completely different beast.
Based on who's viewpoint, yours, chewytikka's or hers? The problem and confusion here I think is that Khris Dillon can call her 'Spice Mix', 'Mix Powder' 'Curry Masala' (note how there's already three and plenty more names for the same thing) whatever she want's to, it's her recipe book after all! Add in the fact that Khris Dhillons book 'The Curry Secret' was first written in 1989 - 23 years ago, long before 'Spice Mix', 'Mix Powder', 'Curry Masala' or even Garam Masala came into general use and acceptance.
By general use and acceptance, I mean by modern day standards and when Khris wrote that book, the closest convenient term for her to use for a general purpose 'Spice Mix' was probably 'Garam Masala' and that's probably the reason she used it.
Kris Dhillion is a well established author and restaurateur of 30+ years, I don't believe that she has made such a fundamental error in a required ingredient.
I don't think she has for the reasons I've already given. In my opinion the errors people have made are in the interpretation of her recipe ingredients and instructions for using them. It's not as if she's asked you to use a pre-made commercial Garam Masala mix - she's given the exact ingredients and quantities included in the Garam Masala she's asking you to use in her recipes.
Kris asks us to use garam masala because that's exactly what she wants us to use.
Yes, but she wants you to use HER Garam Masala as detailed in the ingredients section of her book. At no point does she ever state 'Go grab any old bag of Garam Masala and shove that in my recipes'.
She doesn't ask us to use garam Masala, hoping that we know that she really means 'curry masala' AKA, mixed powder, spice mix, spice blend, base spice, and even curry powder.!
She doesn't have to! She's already detailed the precise ingredients and quantities in her Garam Masala she wants you to use. Your misinterpretation is in thinking that her Garam Masala is interchangeable with what you've become accustomed to understand as 'Garam Masala'.
If I was publishing a recipe which called for chilli powder in it but I really meant paprika, I wouldn't assume that everyone would know this before hand, it doesn't make sense.
What doesn't make sense, is you thinking Khris's Garam Masala is interchangeable with what you've grown accustomed to understand it to be - something you add at the end of the cooking process. You clearly demonstrate this thinking in your second post in this thread -
Personally, I would move away from using Garam Masala in such quantities. It is very pungent and has a tendency to over power dishes. If I do use it, I use only a little pinch at the very end of the cooking, and stir it through.
And again here -
I realise that Khris doesn't really use a "spice mix" as such, aka; Spice blend, curry masala, mix powder but maybe you could replace the Garam masala, and ground cumin with 2 tsp of spice mix.
Khris does use a 'Spice Mix' it's called 'Garam Masala, the contents of which is detailed in her ingredients section! And yet above, you're still trying to argue not only that Khris doesn't use a 'Spice Mix' as such, she has no right to call it Garam Masala', because it doesn't fit in with what YOU want and think it should be!
In recent posts you said this -
I have made KD's GM recipe to spec and used it as specified in her recipes.
And this -
No, I'm aware of how Kris intends us to use GM in her recipes, and like I said, I think it pretty unusual.
Yet earlier in the thread you stated virtually the opposite!
Confused? Yes I am, but I'm sure you've got a rational explanation, you seem to have plenty of those

Cheers and Good Karma!