It's 2015, coach.
The majority of people online don't want to watch a dignified Bill Pearl talking about the valor of compound exercises. They want to see a Kali Muscle.
Same reason why a blowhard buffoon like Trump is leading polls - despite vague, hate filled rants of 'greatness'. It's 2015. It's an entire generation of low-attention span, low-interest, low-test, unfocused people.
it's 2015, this is how the world is now. Kali, DLB, they're today's fitness rock stars.