Nothing is more dangerous than having a Product Manager who has never had to use the actual product. In consumer SaaS, you can fail fast. You ship a broken button, check the heatmaps, and fix it in the next sprint. No big deal. But in Developer Experience, failing fast is just a fast way to go out of business. Here is what happens when you have a non-tech PM (my personal experince): – they think shipping a rough sandbox is fine because "it's just an MVP." They don’t realize that to a…