You know, the "funny" thing is that I don't see this type of purposeful misleading and money grabbing in my other hobbies!
Telescopes/Binos/Astronomy--Well, you get into the spot where the next minor improvement in the optics costs hundreds of dollars more! But, the improvement is there, and you have to ask if it is worth the cost. Often, if you are dealing with an eyepiece for example, it may be that the view isn't necessarily any sharper, but you get a wider field of view. There are great optics available at entry level prices!
Mountain Biking--same story, incremental improvements and perhaps longevity cost more. Great example, I have 2 bikes, 1 has entry level SPD pedals, the other has 2nd from the top XT SPD pedals. The XT pedals are definitely better, feel better, perform better. But, XT costs a little over 2x what the entry level costs. XT is definitely not "twice as good" as the entry level.
But, my point here is that the next level up absolutely performs better, and there is a clear hierarchy! Once you get into the audio hobby, it's no-holds-barred, plenty of BS and snake oil, and a lot of people purposely misleading the ignorant (or they have been so mislead that they take the ignorant along on the ride of ignorance).
You know the common advice here is "upgrade the speakers first", in mountain biking it's "upgrade the wheelset first".