Start by recalling Daniel Dennett's warnings against thought experiments. We set them up by saying: imagine X. We make a vague and half-hearted effort to imagine X. Then we draw the conclusion that we believed in all along. We seldom put the effort into our thought experiments that would let the logic of the scenario drive us to an unexpected conclusion.

I wouldn't call that a warning against thought experiments, but a warning to do take them seriously and do them well. After all, Dennett himself does thought experiments. And of course, your comment does a thought experiment.