There are a couple of huge differences. You don't have financially anything to gain by that, and you are not influencing the opinions of a huge number of people in the process.
There is already so much scientific ignorance in the general public, there is so much misrepresentation of science already.
A ton of people actually believe thinks like the Earth is flat, Joe many times gives a voice to that type of quacks for clicks.
His podcast many times acts as a vehicle for spreading ignorance, other than that yes its entertaining and people should know better. But often they don't and that's the problem.
