The notion that JBL's ad company created that advert in a vacuum with no demographic input is a stretch. These critics come off as looking for something to critique to generate content. Perhaps Audioholics is unaware of how anyone younger than a late-30-something millennial interacts with their peers. They're always on their phones. That is how they talk and interact with each other.
It's doubtful that the advertising agency's creative team was a bunch of old guys, ala Mad Men, came up with this advert. If anything, they should be happy the ad doesn't hyper-sexualize the woman making love to her speakers in a bikini because that would have been the path taken in the 70s, 80s, and 90s. The newer generation of audiophiles doesn't necessarily want to set up separate components and twiddle with cable ladders, power block amps, swapping out an endless train of DACs, etc. They want something they can stream to with their phone, has ease of set up, and sounds much better than the $90 Bluetooth speaker they grew up with. 90% of them will be streaming through the TV and most are more interested in having a platform that isn't just audio playback. JBLs setup might not be your cup of tea, but then again, we're not the target audience for the advert.