I doubt that is true. The hearing aids sold as medical devices, have to satisfy regulatory standards. So a lot of incentive to use older reliable tech.
Not to mention, it probably takes a couple of years to get the certification for a device. So, any device to market is easily 2-3 years old tech by definition.
Not to mention, it probably takes a couple of years to get the certification for a device. So, any device to market is easily 2-3 years old tech by definition.