Memes

They're leaving out that philanthropy is a big part of his videos. Sometimes it's game show style where the winner(s) get huge rewards and sometimes it's direct charity like the "I built 100 houses" video. People watch them because they're often feelgood stories.

It can be a bit controversial as well because people who are more politically engaged often get frustrated by charity when they believe the problem the charity purports to solve is systemic. Whenever he posts philanthropy videos it triggers a huge shitstorm on Twitter of people expressing that frustration and a bunch of people coming to his defense.