That is true, but irrelevant. Making the decision eliminates possible worlds in which we are simulations. Therefore we end up with fewer simulation-worlds out of our total list of potential future worlds, and thus our probability estimate must increase.
Or, to put it in Bayesian terms: P(we're in a simulation|we chose not to be in a simulation)/P(we choose not to be in a simulation) is greater than 1.
Sure, but by how much? If the ratio is something like 2 or even 5 or 10 this isn't going to matter much.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Of course, for "every Monday", the last one should have been dated July 22-28. *cough*