Im with most of the other posters on this one. Yeah it would have been nice if he had a hard hat and some eye protection, maybe even some chaps. But safety is entirely relative... your primary parachute is always going to be your skill and judgement. PPE, equipment etc are never going to be anything more than a backup parachute (and a low chance one at that!)
This guy looks like he knows what he's doing. He'd be up there if you put him in the woods with 10 other experienced guys for sure, he seems to have tree sense. I like the way he handled his saw, I see a lot of guys who are obviously super pumped in the middle of the cut, you can almost feel the adrenaline pumping in their veins. They are twitchy, and unobservant. This guy took his time, kept his wits about him, and never took his eye off the tree as he was backing away (wise move by the way, notice where that second trunk fell?).
He has some bad practices for sure... narrow wedge cuts for starters. but bad practices + experience = knowing the outcome. In that scenario, most operators with bad practices have become so adept at knowing what's going to happen that they get good outcomes. I'd take that operator over one with good practices and no experience most days, but it can be a real judgement call too ;-)
Shaun