Hey blumagic, just wanted to let you know that I am on your side
I have used training forks and have had great success with them. I don't think it is tying their head down at all. I think it mainly helps the rider. If they accidentally put their hands up to high the horses head isn't pulled up with them. I like to ride with my hands really low, basically at my sides if I am trying to get a horse to lower its head, but sometimes you just can't get your hands low enough and the training fork helps with that. The horse can still move its head freely and if it throws its head up it has a gentle reminder to not do that. And I say it is gentle because, like with a tie down there is no give, once you get to the end that's it, but with a training fork the reins slid so there is no slaming against it. If you know how to use them correctly I think they can be a great tool. Of course I don't use them unless I absolutely need them and I take them off as soon as I don't need them anymore.
So anyways I'm with you on this one Blumagic