As a Dota 2 player , I can confidently say that MOBA games ( Though "Action RTS" is a more appropriate term ) aren't exactly youtube material, especially if you have never tried the genre before. This genre of games is very unforgiving to the new player and most people who look for videos of Action RTS games look for either footage of quality gameplay or tutorials.
they should play smite. its in closed beta its a dota moba game. i can give them exactly 3 beta keys so they can play. https://account.hire....com/smitegame/
Pyrion Flax has an entertaining approach to DOTA 2 as a new player, but let's be realistic : This genre won't attract that many viewers