I would say, it doesn't appeal to the thousands either.
The purpose of a show should be to present the latest audio products in the best way possible to a keen and receptive buying public.
What they have become is predominantly a series of mediocre, pale representations of what is possible from good audio, allowing a community of tired, ex-purchasers of audio the chance to re-justify their 20th Century buying decisions.
Good products making bad sounds in demonstrations at shows and at dealers is nothing new. I've been attending audio shows for about 30 years (at least a quarter of a century of that in a professional capacity) and rooms that make a good sound have always been the exception rather than the norm.
Typically, those who make a consistently above average sound regardless of venue have one thing in common - due diligence. If possible, they 'scope' out the rooms long in advance, either to secure the best room year after year, so they know in advance what to bring to suit the room. They ensure the products arrive in good time before the show, allowing an installation that is performed correctly and carefully with settling/warming up time, rather than still fiddling round an hour before the show starts. They consistently make sure the room is clean, the products are - and remain - spotless, the collection of music is suitable for venue, room, and prospective clientele (with a great deal of wiggle room), and they have enough professionally-produced literature presented professionally. They make sure the staff manning the stand are clean, personable, presentable, and appropriately clothed. Despite all this, anyone can have a bad day, but typically those who do all this make a good sound in most places they visit.
Contrast this with the alternative. The first time they see the room is 12 hours before the show starts. They knew from a few weeks previously what brands share the room, but this is the first time they plan out how the demonstration will go, and whether their products work together. Discussions (sometimes heated) ensue as to system placement, choices of music, who does the demonstration, and whether there should be any room treatment (often followed by the blame game when Brand X thought Brand Y was bringing the tube traps, and vice versa). A collection of cold products with thumb prints from handling get put on the equipment rack (which neither company really knows how to set up properly, hence the mild 30° tilt) finally get fired up at about 8am on the morning of the show, the sheets of hastily and cheaply laser-printed paper are artistically deposited somewhere in the room, and then - given no-one's paid any attention to a show-specific playlist, the same tired old tunes are rolled out yet again.
The latter is and should be unforgivable and inexcusable, and trying to hide such actions by deeming it impolite to criticise them does good audio a bad service.
IMO, audio shows should be like car shows - they should act as an introduction to the new thing, that the prospective buyer then goes to test in their own time. Auditioning an audio product at a show is about as valid and informative as getting behind the wheel of a car in an auto show and making 'brrrrm, brrrrm' noises. But, the real-world trumps reality - people do use audio shows to determine what does and does not sound good, and if an audio show was a static display of shiny things, those who don't go to shows today wouldn't go to shows tomorrow.
So, demonstrators have to make what they have as good as they can. Dreams of audiophile-friendly venues and perfect sound in every room are just dreams. What we have in audio shows is the worst form of exhibition, except for all the others.