Everything in BGT is designed to make entertaining television.
Whether it succeeds or not is another question, but that is always the idea.
From saying there is ' absolutely no more Golden Buzzers' ,and then, surprise surprise, the confetti still rains down when it' pressed, to the relentlessly pointless gunning of Ant and Dec stageside, is designed to make people tube in.
When they stop watching in sufficient numbers, the show will vanish.