+1
It's amazing to me how many people fail to grasp this concept
Beyond this fundamental truth, recordings typically have processing that happens after the initial recording that alters the sound from what was originally recorded.
The processing can include:
Compression
Saturation
Equalization
Distortion and Harmonic Generation
Stereo Imaging
Delay
Reverb
Analog Emulation
...and others
So what is more accurate -- the original recording prior to the mixing engineer getting a hold of it or the final product which can sound quite different? One could spend their whole life chasing accuracy of playback at the expense of simply enjoying their music.
Indeed, there are too many variables to worry about.
I stopped being an Audiophile a while ago after spending a lot of $$$$$ in search of audio 'accuracy'. And...I have been much better off for it! For me, it's simply about enjoying the music (a Musicphile I guess).
I own a variety of headphones/iems with different sound signatures and enjoy them all. Honestly, when I hear the term 'Critical Listening' nowadays, I cringe. I'd rather listen to a set of cans that is less accurate if it gets my head boppin/feet tappin.
That said, to each his own. If the wonky, bloated P9 is somebody's thing, more power to them. If it's the DT1770 Pro, ditto. Regardless...hopefully they're enjoying the music first and foremost.