I watched a few to make sure they were ok, but they mostly came off as older guys doing elaborate stunts that kids would do on a much smaller scale (like throwing balls off tall buildings, fat suits on cars, etc )
I'm not shocked they are making $20M or so. One of the episodes showcased their new Dude Perfect headquarters that looked like a block long warehouse with basketball courts, foam pits , etc in it with their DP logo all over it.
I guess it pays to cater to kids base desires on a grander scale