I think we should be more clear by what we mean by modern and traditional.
When talking about an arctic environment it would be better to compare "modern" with the traditional clothes and techniques of the Inuit or Saami people - we don't have any tradition in those environments - ditto the tropics.
By "modern" we mean synthetic and industrially produced. Is rubber modern? metal?
So I am happy with my leather jacket outside in our temperate climate - picked it up cheap, keep it regularly oiled and it has 9 pockets. When its cold I wear woolens underneath. During summer I'll use a mixture of syntheic and cotton - though I'm moving towards synthetic because it dries so quickly - but in hot weather that's hardly an issue - except perhaps in the humid jungle.
The other parts of the kit have to do with independence. Much modern kit has dependence built into it - fuel for fires and lighters, which would explain the interest in traditional techniques which kept one independent.
In anycase - any "ideology" is just an excuse for a closed mind - we do use a mixture of traditional and synthetic.
I like anything I don't have to buy twice!

Yeah - that's the way I feel too!
My grandad was brought up in the old days - did his apprenticeship as a stable boy at the turn of the century. He would point to the shoes he wore everyday and say that he had had them for forty years - just needed to be re-soled now and again. He
enjoyed cleaning and caring for his shoes. My Dad recently asked me when I was going to buy a real pair of shoes - I like the synthetic sports shoes - though, in the tradition of my grandfather, I have a pair of leather hiking boots - kept well oiled of course and with stitched soles so that they can be replaced - the soles, though, are synthetic
