Not at all. This is again more audiophile myths created by this forum by people who only repeat the same talking points without even listening themselves.
Uhh, most people here aren't repeating talking points. I highly suggest you give Tyll's read on headphone neutrality or watch his video as a good place to start. There are also other good sources of info out there. I am not a headphone maker specifically, nor a headphone tester without the equipment. So I leave that to the various professionals out there. I am a software and hardware engineer and do understand many of the principals and physics of sound engineering though.
https://www.innerfidelity.com/content/approaching-neutral
Here is a lengthy classroom video by Tyll explaining a few concepts about headphone neutrality.
With all that being said, I certainly believe that you do not find the B8 headphones all that appealing. Some don't find the headphones that you personally prefer all that appealing either. Since there is no true neutral or balanced headphone that can heard universally among everyone, no one is going to agree on how "good" a headphone is going to sound. Even if there was a universally standard "neutral" forheadphones, not everyone would enjoy that sound signature.
That being said, I define "hifi" as the term implies. High Fidelity. For those that don't really know the definition of that term. Fidelity is being as accurate as possible with the reproduction of a source. Be that video, audio, or images. High meaning to the highest levels achievable in relation to the current advances. What this means is that an accepted headphone being "hifi" years ago, may not be so hifi in comparison to current hifi accepted headphones. This problem is further exacerbated due to the fact that headphones can't be true neutral. As partially explained by Tyll, that is because how headphones all interact differently with all our different ears, heads, and bodies; someone chasing true neutral headphones is making their own, modding, buying lots of headphones, or a combo of the above. This is because you cannot make a headphone actually ever sound like you are sitting 10 feet away from a live music performance. Just isn't happening. That doesn't mean you can't have a headphone that is very resolving, reproduces most of the details, provides a small auditory illusion of sound stage/space, and sounds pretty close to the original live source.
I have some really crappy headphones, and some more expensive "crappy" ones that sound awful. They lack details for example because the sound comes out muffled. Meaning you literally lose audio reproduction being sent to the headphones because the headphones are unable to reproduce that sound. Those are not hi-fi. Other headphones, like Sony XB950 or Beats, are designed as "bass monsters" that are heavily tuned for the bass spectrum. They are meant for fun for a certain set of listeners. They are not listed as hifi headphones or marketed as such. They are marketed usually as "Extra Bass" headphones for a reason. They are "fun" headphones for people that prefer a little extra boomy bass in their audio.
That being said, unless a headphone as the word "Monitor" or "Reference" as part of it's name, chances are it isn't attempting to be "hi-fi" in the sense of chasing neutral. Still, many headphones that aren't listed as monitors are trying to be neutral in sound to a point as that is what many of the audio community are after. As I said before though there is no true neutral for headphones so some are going to emphasis bass a bit more, others treble a bit more, and others mid more. What sounds "neutral" to you won't sound neutral to others. B8's are not specifically listed as monitors nor marketed as "hifi" in the fact they are chasing neutral. Despite not being labeled specifically as monitors or highfi, they will sound good and close to neutral for some people and less for others.
