No one wants to be a fat cricketer or coach.
Sure, you point to the tubby players at the top level and try to fool yourself that it doesn’t matter. It doesn’t work because deep down you know that being overweight just isn’t fun, especially if you want to do well on the pitch.
Losing weight and dieting and hitting the gym are even less fun than being fat.
Running on a treadmill isn’t anywhere near as exciting as scoring a hundred. Eating a cake at tea is plainly better than a protein shake and an apple.