Loudspeaker Listening - Un-involving ?

I just read Michael Fremer's review of the Vanderteen Model 7 loudspeaker from last year. At the end of his report, he said something shocking -  that (virtually) every speaker he's reviewed ended up sounding "fatiguing" or "boring". And Fremer has reviewed many $40,000-$60,000 loudspeakers !!!
 
Are other reviewers "bored " as well ? They might be - being that they move from one speaker to another, for reviewing purposes. I can't (myself) listen for than 15 to 20 minutes with my very expensive loudspeakers. I withhold the name because I don't want to publicly kick-down a small (seemingly honest) company.
 
But Fremer is on to something - high end speakers are ultimately high-distortion designs that compress the music signal. We know this from the distortion numbers that never get published. Wikipedia's loudspeaker entries mention that loudpeakers suffer from 2-3% distortion. Why anger the advertiser ?
 
Fremer claims that the Vandersteen is non-fatiguing. Is this a harbinger of the future ? Or was Fremer wrong ? *If* we have "non-fatiguing" loudspeakers, will they be passive-box designs ? Will they have to cost a fortune (to build) to pull it off ? Or can another type of speaker do it for far less ?
 
On this last question, I'm thinking of time-corrected, DSP crossovers working with compression-driver horns. Only time will tell....