I am not sure what you mean by "things" when you say that I can't assume there are such things as qualia. I say that there are ways we experience things, and those are qualia. They are not things in the way that apples and dogs are things, but in another way. There is nothing strange about that, because there are many kinds of things that exist in many kinds of ways.

I don't make any assumption about the structure of experiences, but try to figure it out by looking at my experiences.

I personally assume there is a direct relationship between our experiences and physical phenomena in the brain. I have no reason to think I disagree with VAuroch in that respect. I disagree that it follows that "qualia do not exist," is a reasonable description of the resulting situation.