I have seen that video before.
That is absolutely the gutsiest tree removal I have ever seen. I can't imagine climbing something that high, that dead and rotten, and throwing it down little bitty piece by little bitty piece.
Regarding the climber: I am in awe. Enormous removal gets my immediate respect. Climbing and removing a gargantuan dead and rotten tree earns respect of mythic proportions.
Unless those old Euc's hold together better than I think they do (having never worked on one), you couldn't pay me enough money to climb that tree. Go ahead...offer me 10 years pay, with transportation, lodging, and hospitalization insurance included. I won't be there! (unless I get to hire a helicopter to hover overhead and catch me on a bungee when it all comes crashing down)