Ali Abdaal is one I have seen pop up a lot this year. Every video of his mentions he studied at Cambridge and is a Doctor. Clearly it works quite well for the audience he is targeting as he has over 1.2 million subscribers on YouTube with an highly engaged subscriber base.
His content isn't anything special when you look at it and he plays a lot on his "socially awkward" personality which seems to work well with people seeking out self-improvement advice.
These people sure are excellent at marketing so I guess fair play to them. Ali isn't hurting anyone with his generic advice, probably quite the opposite in fact so I fair enough to him.
Not that 700k is bad at all, it is just an observation at how many subscribers some of these people can get primarily through name dropping.
However I don't think Ben is all that fussed about chasing every subscriber like Mark and Ali.
By someone else
I would enjoy content from him that doesn't have that feeling of being watered down, however.