You Tube informs me of channels i might like to subscribe to when i log in, and it led me to do a very brief investigation on who these subscribers were. They fit a physical pattern, all white, all photogenic and all American. All American is in fact a euphemism for white and heterosexual
A lot of the highest subbed channels are run by production companies now with the 'star' a de facto actor. With the most popular videos attracting millions of views , its not surprising that television companies would try and create their own personalities to sell the advertisements.
Work in progress....