Pretty much every advancement in audio reproduction comes from the relentless chase of technical performance. They all aim to convey as close as possible the original sound to the listener. If a listener feels overwhelmed by the details, he/she might as well think about whether there is limited mental or sensory bandwidth by the listener to process those details in real time. If you are okay with or even prefer those decimated, truncated, obfuscated sound that contains only "the essence of music", you might as well live in the past.
The problem with posts like this is being full of generalisations and hyperboles.
I do not think many of use would like an "obfuscated" sound.
Audio in general is quite complex, very far from being black and white.
It is just like the Babylonian Confusion. There are different types of music, from different eras, recorded by different equipment, mixed differently by different people, and so on and so forth. There is no unified standard on how it should be done or what is an "original" sound.
In that case all headphones suck even just by measurements, because each and every one of them shows notable colorations - and we aren't even sure what is the right target in the first place for 'accurate reproduction', not to mention other characteristics attributed to certain driver types.
But even just staying with estats, I tried to explain before, that attack and decay can affect my perception in a significant way, even though a thinner, even lower-mass diaphragm, decreased membrane to stator gap etc. should provide yet more resolution (which was never at a level that was 'fuzzy' in the first place but it also seems to be more prone to reliability problems). I am not sure if there is such a thing as 'superior' technology. They have different strengths and weaknesses that can be more valuable depending on many factors and people perceive them differently.
But all this infinite number of different music and recording 'style' is not necessarily a bad thing. It can be. We know about loudness war and the legacy. There are many recordings, which are in general 'not as great' as others. Does that mean that we don't listen to them because we don't value the music? I think not, or at least I don't.
But on the other hand, there are many others which are good, but for different reasons. Variety is not bad in that sense.
I think it would be pretty boring, if this was (to an extent) more 'unified', and there were certain 'rules' on the vocal should be placed like this with this microphone at this distance (with this pop filter or whatever), it should sound like this with this compressor or EQ, use a Bricasti processor to add reverb (yes they aren't just known for their DACs) etc. etc.
I hope the point is clear, but I tried to bring out photography as an analogy here:
Most 'forgiving' TOTL headphone in your opinion?
There is a certain photography style that I like and there is a certain way which images are process that is more appealing to me.
Does that mean that I can only look through that 'filter' and not appreciate others that are completely different? Absolutely not.
If I could take the "sound" of the original Lambdas, old Omegas HE90, etc. with new technical improvements, would I take it?
At least in theory, yes, sure, why not.
But what is actually here right now with the L700Mk2, X9000, HE1 etc. etc.?
Something that's quite different. Even measurements I see that rather than new being flat out better than the old.
We can also look at the DIY T2 amp section (just like the original) and yet, it is at the very least tied for the top spot for estat amps.
And it's a minor point, but also, "every advancement in audio" is partly about having a more efficient, streamlined production with more readily available parts coupled to effective marketing to sell you that product or continuously evolve to sell you the next "advanced" product.
All this would not work without profit being the main incentive. I do not care that much as long as the product is convincing - whether that is affected by my pre-bias due to the use of certain vintage products I am not sure, I certainly see advantages and flaws in any product which is what I generally find lacking in most reviews.