I'd have to agree on most of your points Brad. What I disagree on is that you said alot of people "pumping out" these DVDs "have no idea what it takes to deliver a solid performance" I'm sure that they have an Idea on what it takes but focus their attention on creation. Some creators know that they are good at creating and know that they don't have the chops to perform in real world setting. But I can give you a great example of someone who Pumps out great material and is also a solid performer. Eric Jones.
' A lot ' is not 'all'. There will always be exceptions. But where there are exceptions there are rules, and it helps to be able to recognize them.
Two things that have been overlooked.
1) Not all magic plays on tv and not all types of reactions carry across the camera. There are some amazing magicians in the world who work successively for very intelligent people on a regular basis - but they could never succeed on tv with the material they normally use. Its not that the material is weak, its just not designed to be read on camera. If the magic doesn't play through to us, it is hard to imagine it is connecting with the audience. The converse is equally true - as blaine illustrated. If the people on tv react strongly, it is easier for the home audience to then believe the magic itself was/is strong.
Visible magic plays great on tv, but some - including myself - have argued it achieves only the shallowest of reactions. Something visual requires no engagement of the audience. They see it and either accept it or don't. Non-visual magic, however, occurs in the minds of the audience. They are part of the process. This is why one never sees the full alien in alien. They had scenes with the alien being fully visible, but seeing 'what it was' was anticlimactic to what the audience was conjuring in their own minds when they only saw bits and pieces. The gaps the audiences filled in were far more exciting. There are no gaps in visual magic. Another example would be blair witch. For some, this was a terrifying movie. Its amazing what one can see when looking at a black screen. I will note, though, this type of experience is not for everyone. There are people who don't want to have to engage - who just want to see and be told.
Likewise, visual magic is often surprising given its suddenness and produces a surprised reaction. These types of reactions are extremely telegenic - they come off strongly on camera - as they are often loud and quick. True palapable wonder, on the other hand, is more often felt than seen, it wells inside the participant and lives inside them for hours if not years. It is camera shy and, sadly, makes for bad tv.
2) The moment you turn on a camera, everything changes. Psychologists for years have known that any attempt to film a subject changes the subjects behavior.
Now, if you're david blaine, you can burn miles of tape in order to catch lightening in a bottle - as he discussed at magic-con. But most instructional videos have neither that budget nor that luxury.
The only way to change things is to get the people to forget about the camera. I was once hired by a bthp to help with his tv pilot. It was a reality show featuring people in bars.
They never got good footage and came to me after seeing a show. What I did was go up to the tables, with cameras rolling, and do magic for them - breaking the ice and getting them into a new head space. After a while, they forgot (a little bit) that the cameras were there as I made the focus them. THEN when they went into the show content, the people were less self conscious being on camera as the equipment was no longer the focus of the interaction.
Likewise, you see comics warm up any televised tv taping you attend. They also train them to respond in an over the top manner. They want people to forget that they are at a tv show and loosen up and be themselves (or hyper versions of themselves). Without the warm up, you get muted responses.
In closing, magic is about the manipulation of reality. Tv is not, nor has it ever, been reality. Magic is meant to be experienced live. While we can enjoy watching others experience the manipulation of reality (ala blaine) unless the tv viewer knows beyond doubt that what he or she is seeing is an exact recording of the reality being presented, no magic can be said to have been conveyed. This is why the notion of camera tricks is so deadly for our art. But even when magic manages to connect through the screen, that power will always be miniscule compared to that experienced by those watching live. Magic can produce surprising, deep and wonderous reactions in a live audience - but not all of those reactions can and will be seen by someone looking through a tube from miles away. Magic is visceral. It is seen and felt. It is live.