Was there anything in there about the Beats Solo 3, Beats X or PowerBeats. Or any of the more recent BT headphones? All of them use a higher power BT. And the W1 chip is largely used just to make the connection, while my AirPods have good range they aren't anywhere near as powerful as my Airport Extreme (which also has a larger antenna).
They have done many double-blind tests on non-ionizing radio signals (which includes WiFi, BT) and none of them showed any relation between the waves and affect on the human body. Other than if you turn the volume up loud you can hurt your hearing.
You find people who write the posts like you read in Reddit all over the internet. I have a rare-blood disease (confirmed medically) and on the web site for one of the foundations related to it you get people all the time who have researched the internet and decided they had my disease. They read an article on the internet where someone else had the SAME (they never are) symptoms as them, etc. so they just know this is what is causing them to have their problems. One went so far as to get funds to fly to a hospital and join a medical study, but first they of course did medical tests to diagnose her. She didn't have it. Now she goes all over the internet telling people with my disease not to volunteer for medical studies "because they will take your diagnosis away from you." These are the people who post on Reddit.
Go to your doctor, your ear canal may have an issue or it may have a unique shape that is not compatible with the AirPods. The AirPods have a 98% approval rating and the vast majority of those that don't like them is due to having to use Siri. Stroke-like symptoms and pressure were not listed.
By the way, if you went to an Apple Store to buy your AirPods, or have ever been in one or many other stores you were exposed to much higher amounts of BT and WiFi, apple uses beacons and other stores have adapted them.