Nope. Because most of those people aren't eating weetabix anyway, and awareness/a reminder that the brand even exists, when a U.K. supermarket sells a hundred different varieties of cereal by Kelloggs and various modern posh granola stuff instead, is a win considering how little effort this took. For every 99 people that weren't buying it anyway, there's 1 that goes 'huh, I ate weetabix as a kid and haven't had It for ages, maybe I should try some again out of nostalgia'. For the same reason, Marmite's 'half of people really hate marmite' works. As you've lost those people anyway but reminding people it exists through a dumb catchy skit is why viral marketing is successful. It's a fraction of the cost of media advertising in a fractured TV/radio/print landscape.