Aaaahhhhhhh

You write here that if the thought is like an act that is disallowed, then yes, a person forbids something, and you even compare it to mixing milk with meat.
But kl, when they say that in the act of adash, the intention is that the person only created a state of affairs in the world, created a reality, about which the Torah says that it is forbidden, it is not the person's own act that caused the prohibition. The person only mixed milk with meat, and the Torah says that such a thing is forbidden to eat. Therefore, to say that a thought is like an act that is disallowed (and therefore adash) is meaningless, because if it is the thought that disallows, then it is the person himself who causes the prohibition. In short, in my understanding, even if it is the thought that causes the prohibition (and it is not just a condition for the prohibition), it is still adash.