Think about it from a certifier's viewpoint. If you're looking at a picture of something that has already been done, without any pictures of it being done, how do you tell that person did it? For all the certifier can tell, their spouse or friend or hired person (or a previous owner of the land), could have done it. We want to make as sure as we can that the person who's got a badge, actually has those skills.
Say someone tries to hire someone who has a roundwood working badge, or an animal care badge. But, they "earned" it just by just showing pictures of things already done. They never actually did any of the work. So, they come to work and actually know nothing and end up building a bad shelter and feeding your animals the wrong things and not keeping their house sanitary. That'd be horrible!
Now, of course, the lower level of skills aren't usually what you'd hire someone for. They're basic skills that show that someone can learn stuff. Say you might want to hire someone with an Wood badge in rocket stoves to make you one. Or maybe a Iron badge in natural building to make you a wofati. And, we went and certified a person that said, "hey, I made this wofati and it's rocket mass heater!" But, they never showed progress pictures, and it turns out, their X-wife did all the work, and they know nothing.
This is something every certifying agency has to deal with. Right now, my husband has a coworker that is a phlebotomist (the people who draw your blood), but it's apparent the person knows NOTHING about phlebotomy. Their wife probably took all the tests for them. When asked to take a test at work, the person stormed out, refusing to do so.
We're trying really hard to make sure that:
(1) The documenting requirements aren't TOO complicated
(2) The people who are getting certified have a high chance of actually having done the stuff and know what they say they know
(3) It's easy for someone who's looking at hiring or giving their land to a badge earner to look at their pictures and judge for themselves the quality of the persons work
(4) To have an online resource full of pictures of people doing useful things, so others can learn from what they did.
I don't like videos, either. But, sometimes, a video seems like the only way to prove that someone has done it. And, it helps other people online learn and find out about permies. We're building a vast collection of knowledge that is FREE and available to everyone. None of us are getting paid to certify. And when someone tries to get something certified that doesn't have documenting proof, that makes it really hard on the certifiers. We don't want to accidentally certify someone who never did a lick of work and has not one ounce of knowledge about a subject!