This is what convinced me to finally place an order for an iPhone 8 and replace my old 5c. I listen to podcasts while driving a couple of hours each weekday and sometimes use the phone as a GPS, so being able to charge the phone and get the sound out of it in to my car stereo was a deal breaker for me. I spent a couple of days looking for a good solution but all the cheaper alternatives had stopped working with iOS 10.3. At that stage i felt like Tim Cook could go and bugger himself and that i might as well get a Samsung. It was obviously not because the other adapters were not working properly hardware wise, but because Apple had blocked them in software. A real ****** move by them. But at least there is one (overpriced) adapter which works, so i can keep using iPhones and will not be forced to replace all my iOS apps with Android ones.
Still... sometimes Apple is just a ****** company. Sadly.