I believe he's referring to the fact that most copy protection ATTEMPTS consume more bandwidth, make the videos harder to use, quite often prevent a great deal of people from even being able to access them in the first place -- and to be brutally frank, a 14 year old script kiddy can bash aside like it wasn't even there.
As has been said, copy protection over the Internet and on computers in general DOES NOT WORK, or even properly exist. There are lots of scam artists out there who claim it does and will take your money, but as Shyflower said the only real way to prevent it is to not put your video online in the first place. You don't want it copied, that's your option.
There are methods that can kind-of slow down 'normal people'; HTML 5 video is not one of them. HTML 5 video offers no attempts at DRM whatsoever, which is why you'll never see places like Netflix or Hulu using it. Hulu uses flash, which does offers some DRM - Netflix uses silverlight, which offers a great deal more, but in both cases you can either intercept the data stream or simply 'record from screen' with certain utilities.
Just look at normal software to see how pointless even TRYING to copy protect things are; Microsoft sank big bucks into "windows genuine advantage" and using SLIC hardware to verify certain hardware was 'sold with windows'; what was supposed to be the security net ended up being the security hole with faking slic tables or using slic emulating boot loaders, so Windows 7's copy protection is a joke. In the game software world there are copy protection packages like Starforce, Securom, FADE, Tages, etc, etc... you know how many PC games it took more than a week for a "proper" crack to arrive on? ONE. Deus Ex 3. You know to date how many games for PC remain copy protected with no crack for them? ZERO.
In many cases, even with legal copies of the game the copy protection prevents playing or causes gameplay issues. I encountered this on Bioshock and Skyrim -- I had to crack games I actually legally bought just to play them, because their copy protection was throwing a wobbly over my hardware.
As such, the 'flawed layers of protection' as Mitica called it, would without the efforts of crackers have prevented me from even using them! It's a waste of the developers money, it's a waste of our money since the cost of developing these systems is transmitted to legitimate owners, and it inconveniences legitimate owners while NOT inconveniencing the majority of people who pirate!
.. and that's games and OS -- actual software. Video is just a data file reliant entirely upon the player -- so that's even HARDER to secure that an actual program. In order for it to play on the users machine the code to decrypt it must be present on said machine, and if it's on the end users machine; decrypting and making a copy is possible.
Easy too, since in most cases you have some teenagers or college age crackers sitting around doing the work for 'joe sixpack' and thanks to the Internet easily able to share their findings with the world. The free flow of information allows entire groups to work together and for people who lack the skills to crack themselves, to simply use their favorite search engine and grab some malware ridden pre-built method for doing it.
Copy protection and DRM are a myth, that have been repeatedly slapped aside as if they weren't even there. It's a waste of money, time and effort to even TRY. Doesn't mean ignorant investors and corporate weasels won't endlessly throw money at it though. It's a bit like door locks and alarms on a car, it keeps the honest people honest but someone who knows what they're doing all you've done is added a ten second delay at best.