I'm no expert on Amsterdam, but checking your last article mentions rent control; why would property developers bother building new housing when the returns are artificially deflated by government action? This is precisely the problem with regulations, they damage price signals. It would not at all surprise me if the government is in part causing all of these problems.
I will also note that housing being expensive in a large, popular city is basically the case the world over, and I suspect tourists are just an easy scapegoat to deflect blame from policy failure.