Several million watched the Rogan interview. Try again.Never heard of "the Kam camp." It does not sound real to me.
Rallies touch maybe a few hundred thousand at most, and mostly touch the already committed. A ground game touches tens of millions, and touches the non-committed. So we are talking about 100 times as many people effected, and effecting people who are more on the fence.
Even with that, ground game only really adds about 1% to the total... But 1% can make or break an election these days.