How has the US X-37B changed this narative?
The laws of physics haven’t changed. Of course, we can expect optimal tactics, and strategy, to be vastly different than on the surface of the earth, and who knows what the X-37b has been up to?
For instance, imagine a war between hyper-advanced civilizations conducted at the center of a star, or at the center of a black hole. Would the tactics be different? Vastly, inconceivable so!