A loudspeaker’s task is to replay a signal (analogue or digital) as faithfully as possible.
This would include covering various parameters such as frequency extremes (no good chopping of the lowest octave) and dynamics, frequency response matching as close as possible, point source radiation patterns, accuracy in tracking and timing, and all the resolution (detail, timbre etc) that was captured by the recording medium.
The ability of various loudspeakers to do this varies greatly and listeners vary in their preferences as to where they are willing (and where they are not) to accept serious compromises.
The problem is that all serious loudspeaker issues are easy to hear once we start listening for them. They are, after all, the most distorted link in the audio chain by far, nowhere near any measurable unit of technical perfection.
So, as of 2019 (and the foreseeable future), buying any loudspeaker is a decision based upon how many compromises you are willing to accept. And which ones that particularly matter most to you.
Any loudspeaker manufacturer that doesn’t own up to all this is, as the OP pointed out, acting fraudulently.
An extreme audiophile unwilling to accept any of these unfortunate serious compromises involved in all loudspeaker design might find the whole obsessive search extremely tiring and frustrating.
Instead of re-enacting the doomed Captain Ahab and the white whale, perhaps they might be better off remembering why they entered this pursuit in the first place, namely as a quest for pleasure.