Not to sound pretentious, because I'm a big craft beer fan, but I think they're just saying that because Red Stripe is a pretty typical beer in people's fridges. There are so many great craft beers out there, even if you like Red Stripe, nothing's wrong with a bit of variety.
Not sure how it is in London, but where I'm at you certainly can't run down to 7-Eleven and expect to choose a beer. Your options will be limited to a handful of mass produced beers supplied by large distributors. I keep a mental list of shops with decent microbrews.
This product seemingly takes the hassle out of deciding whether traveling the extra mile and back is worth it for a unique beer. There's no hate specifically for Red Stripe.
Because it is vastly inferior to their other drink, Dragon Stout, from that brewery and they either stopped making the superior brew or don't distribute it as widely anymore.
