...and the release notes for iOS 14.3 don't mention any changes to this new "feature" (cough. handicap)
This is a deal breaker for me, extremely disappointed in Apple. Again, the disappointments keep adding up for me. They're treating us like dumb toddlers, making irreversible choises for us, taking away features that were present when we purchased the phone.
I'm going to have to sell my iPhone second hand, and go back to Android.
Apple is plain wrong in thinking that everybody strictly uses their Apple earbuds. Many people connect their phone to an amplifier, either in the car, or at home, or any soundsystem.
When you connect any audio-source to an amplifier, you need to make sure your output signal is as hot as possible, in order to have a good SNR (=signal-to-noise ratio). Any circuitry has a so called "noise floor". The DAC circuitry (Digital-to-Analog Converter) of the iPhone is quite good (in comparison with cheaper phones). But only when you make use of the full range dynamics of the DAC.
If your audio source (iphone) outputs only a weak signal, then you need a lot more amplification to reach the desired SPL (sound pressure level) in your sound system. Amplifying a weak signal, means amplifying the noise floor too. So the SNR (signal to noise ratio) gets a lot worse, resulting in poor audio dynamics. Amplifying a hot signal (max output) makes sure you can retain the full dynamics of the DAC, as intended by the designers of the DAC circuitry.
This is basic audio engineering knowledge. Apple engineers should know it, but they choose to intentionally ignore the people who don't listen to headphones. Also those who do listen to headphones, now have a very mediocre experience, because the available dynamics (difference between noisefloor and loudest audio peaks) are severely reduced.
With these new mandatory Apple iphone limitations, you have to limit yourself to 80dB if you want to listen more than a few hours a week, which is ridiculously low.
I work in the concert industry, I work continuously with dB levels. I'm going to tell you what makes people deaf. It's not the music through the speakers (if your not so dumb to stand directly in front of the FOH speaker stack). Its people shouting in your ear the whole evening/night, when making conversations. Most studies about concert dB levels don't take this into account. 80dB for music is ridiculously low... In concert situations, and in earbuds.
So people, vote with your wallet. And send Apple feedback, they don't monitor these user forums.
https://www.apple.com/feedback/iphone.html