I really don't have a problem with tethering your dog. I know you love the bajesus out of your dogs marty and they never go without your love and attention. I think as an owner you need to be watchful for any anxiety issues that may occur. Some dogs live happy lives being tethered, and some just cannot cope with it. Just like some dogs aren't good for crates or kennels. You just have to know what will work for you and your animal. Ultimately, your animal will live however/wherever you chose for it to, but as a responsible owner we need to find out the propper confinement for our individual dogs.

EDIT: BTW, everyone I know those look like huge chains, but they are not, Marty uses the lightest weight chain possible. He is well aware of the damage that can be caused by impropper tethering.