Planes get rerouted around weather all the time, that's just how it works. Storms, turbulence, even just busy airspace can push flights off their normal path, and pilots file those reports for other pilots, not as proof of anything secret. Those white lines are ice crystals from the exhaust, they form when hot air hits cold air up there, and it's been happening since planes started flying high enough. A guy at a gas station telling you the sky is fake is about as solid as a truck stop fortune cookie.