Which phone I use for personal audio doesn't really matter to me. As long as it's got a reasonable amount of storage for local playback, good wifi and cellular reception for remote streaming, and a USB-C port, I'm good.
I use external DAC-AMP dongles the vast majority of the time now. My current favorite is a Fosi DS2, but I've got three others to fallback on: a Jcally JM6 Pro, an Apple, and an ancient LeEco.
It comes from confidence artists taking advantage of the cognitive biases that we all possess and lay intuition about how this stuff works.
Science aptitude isn't a common, and music is evocative. Blend that all together and it makes fertile ground for criminals to run wild.
Here's an analysis performed by a very experienced electrical engineer. You know, someone actually qualified to answer such questions:
There's plenty more on the site.
All we need to concern ourselves with is frequency response, distortion levels, and load characteristics when it comes to examining drivers.
If the frequency response adheres to a well defined target, the distortion inaudible, and the load inoffensive to the majority of amplifiers, the technology used to get there is irrelevant.