Alec, I'm not far behind you in number of dogs through FF.

And I can't see the YouTube video either, with my sluggish connection.
Years ago, before I knew there was such a thing as a retrieving table, I did all the dogs on the ground. I (and my bad back) much prefer the table.

Plus, the "sacking out" work I do, meaning rubbing the dog all over and handling everything from toes to tail and in between, is something the dogs really enjoy and helps them for other things in life, like vet visits, ear cleaning, clipping toenails, grooming/clipping/removing burrs, etc.
I find the post to be beneficial as well.....the dogs that are already used to real restriction on a chain gang and/or lead don't argue at all, and are cool with being there. The dogs that have never in their lives had to be restricted in any real way (except maybe on one of those flexi-leads) need some prep work on basic OB before the table, and they're usually the ones most likely to pitch a fit, mostly because they're spoiled and used to having their own way.
Carol's pup was a quick study, thanks to all the work she's put into him plus a very strong natural desire to retrieve. Most of his table time was because Carol wanted to learn the process....had it been just me, he'd probably have been through the table part in about a week, maybe ten days tops.
He was a pleasure to work with compared to some of the dogs I get in here for FF. I am not putting all that much pressure on a dog....just enough to show them what I want and form a conditioned response.
A good example of how the post affects the dogs I work with: a few years back, a trainer friend of mine sent his assistant trainer up here to learn FF from me. The guy is about 6'3", ex-military, and tougher than nails, but he loves his dogs. He brought two of his personal dogs to work with, both English Pointers. All the prep work went smoothly and he did a great job....the dogs love the rub down/massage sessions that precede each lesson. Then it was time for the ear pinch. While it took very little pressure for his dog to respond and she handled it happily, he felt terrible about doing it and thought the dog would hate him. At the next session, his dog came back, leaped up on the table, ran to the post, leaned against it and waited to be strapped in. She wasn't the least bit put off by it.
The flip side of that is the dogs that come in with attitude problems and temperament issues. At 5'3" I'm not big enough to wrestle with them and I don't have their teeth or nails. I'm much safer working them strapped to the post while we work through their attitude as opposed to getting my face or hands or arms ripped off. I've not had too many that were that bad, but I've worked through a good many biters on the table, where the restriction kept us both safe while they learned to accept being handled.
In probably 350 dogs, I have yet to have one that suffered any negative effects from the table/post time, in enthusiasm, desire, relationship to humans, or any other after effects.
I don't think it's the table or the post that's the problem....it's the person using it that makes or breaks the process.