For the sake of argument I’ll assume this is true. If you want to have a guarantee that data cannot escape your air-gapped computer, it shouldn’t matter much if your laptop had any additional secret radios since your computer will still leak emanations regardless. Researchers have been able to send and/or receive data through various other components. Off the top of my head I believe they were able to communicate with speakers, hard drives, gyroscopes, processors, and probably more.
For a stronger guarantee you’d need to build a room which shields you from electromagnetic radiation and sound, which is obviously very expensive and difficult to build. Plus you’d need to be able to physically protect it from any intruders otherwise this is all useless. This isn’t realistic for lone individuals to achieve and if you’re not an extremely high value target, this isn’t a realistic threat to you.
I’m not familiar with “forensic data blockers” but maybe you can transfer data using a USB or DVD which has some form of physical write protection which you can enable before connecting it to the air-gapped computer?
If you have proof now, why do you need to wait before publishing it?