When you bring your wallet into an establishment seeking gear, you should be able to play the kit, strike the cymbals(properly), and even re-tune them as if they were your own.
Agreed, but the vast majority, I would venture to say almost 100% of people playing these kits, are not there to buy the kit, or anything else. They serve only to create a noisy environment that 1) deters potential customers and makes transacting business problematic, and 2) takes a toll on the gear.
Seriously, when you see the kids bashing, are they playing well? Usually not. When you see a drummer who's genuinely considering buying a kit or snare or cymbal, are
they bashing them? Usually not.
I'd like to add that I buy a fair amount of gear outside of my dealings with the companies I endorse, and the last 3 kits I bought at GC (two of them in the last 4 months) were purchased without my needing to set them up and play. At the worst, I picked up a tom or snare and tapped it with my fingers, no sticks - or noise - required. In fact, I can't remember
ever bashing a kit or playing endlessly/needlessly in order to make a purchase.*
But I will also turn around and walk out of a GC when the noise is loud and gratuitous (such as kids being dropped off after school to burn off energy so they don't make noise and create havoc at home.) And, I'll let the store manager know, since the staff in the drum departments obviously doesn't care.
Bermuda
* I remember the first two kits I bought at GC back in the '80s - Yamaha and Sonor - and there was no need to set those up bash away either, even though I was younger and might have been prone to do so in those days. Maybe it was the pro in me, or maybe that I was there to actually buy something, not let off steam at the store's or other customers' expense.