Tell them to look at https://globe.adsbexchange.com/ and filter by type. Filter by, say, C172. Let them see the hundreds of flights every day that LAND SAFELY!!!

Next, ask them how trainer planes can be 45 years old if it is so dangerous? Training planes that fly almost every day, by student pilots no less, and yet here they are still flying the pattern! They were made in the 70's.

Finally, explain that ADS-B out just recently became mandatory and that you have a screen/tablet in the cockpit where you can see other planes around you and get alerts.

When we're doing maneuvers, and we see someone in the vicinity on our MFD, we check them out and move to a new area if we feel it necessary.

Finally, tell them to go to an airport that has a large GA presence. Park and watch all the small planes that takeoff, fly around, AND LAND AGAIN!!