Life is also too short to spend hours removing stuck on taps, I agree the vid looks as though you need loads of space, but it is only the size of a box spanner, the length is totally upto you. Don't knock it until you've tried it, I have and it does the job well.
"What does it do better than a box spanner", - its Stronger, has 7 different size sockets to suit all those cheap chinese imports, can be driven by a cordless or a ratchet and you can let go of it and it tays in place for when those arms are beginning to ache and you don't then have to realign the tool. Becasue it uses a thread sleeve to raise the socket it will clean the tap tail thread if it has been damaged or clogged up. It will do taps up tighter than most other tools meaning that the tap will not come loose again causing you a second visit later to retighten.