The next generation of learning celebrities are already here. I don't think they will be the same as those in the past though. Video sites allow far more niche versions of these great educators who don't need to work on getting TV contracts to spread their enthusiasm for their subjects. I doubt future generations will have singular celebrity educators, but a wide array of them that all get to add their own creative touch to learning.

I'm very excited about it.

Grant Sanderson (3blue1brown) for example will change future generations' relationship with learning math. We haven't have a celebrity math educator before!