I think the increase of search comes after the price rise, not the other way around.
But where does the article assert the opposite? I read it twice and I don't feel like that guy from Google says or implies what you try to refute. He just says something which can be loosely interpreted as sort of correlation between Bitcoin price moves and Bitcoin searches. But as we all know, correlation doesn't mean causation. If I'm missing something, which is quite possible, please tell me where he says that the change in the search rates comes before the price change and I will definitely stand corrected.