You are straining the credo of this community. Gauging general trust in engineers based on where the most popular PC operating system comes from is simply too simplistic.
Very few people use Microsoft products because they actually like them. They are just the market leader in desktop OSs and do their darnedest to keep people trapped in Office. Their market dominance is no reflection on trust.
Space is very cold. It's -270something C. The temperature on Earth is much higher. The rays that make it through to our atmosphere bounce off the ground, warming it up from the bottom up. That's why you need a jacket when you climb up a mountain because it's getting colder the higher you go. Imagine a mountain higher than anything we have. Eventually, you'll get to -50 C.