Hmmm.. this wasn't exactly about exposing magic though, but the fact that Andy couldn't give any answer to the question about why he exposes magic makes it very bad and wrong if you ask me.
Instead of listening to my guts, I'd rather look at facts when saying something is wrong or right. Magic has always been evolving, also without free online magic tutorials. Also, music is meant to listen to, movies are there to watch, but magic is in no way meant to be exposed or else it would be just 'entertainment', and it is so much more than that. If it would've been only (potential) magicians watching these tutorials, fine, but this is not the case. Not to forget that most of these tutorials are just horrible as for teachings and will only completely kill the related effects. For more, please watch
this.