Well, obviously its not rule. Youre right but, if he want to be really good he have to practise really hard. And if he want to make a really popular cardistry video, he have to be good. Sure, main thing is have fun. Sorry for misdirection.
"How to make a really popular cardistry video...?" - You have to be good! How to be good? You have to practice at least 6 hours a day.
Try to check Dimitris video called Opera. Beautiful piece of cardistry.
Probably something like "Archive" of all tricks from ALL websites or something like that. But I still think that it will be something like social network for magicians.
Well, in my opinion are great for training regular tally-hos or bikes. But masters are little bit better for me (handling etc.). But if you want perform or make a video i recommend vipers. They are much more interesting but thats all.