I don't understand what the kick about tree skiing is. Frankly I find it dangerous. Not that I'm afraid of it, or haven't spend many hours skiing in and around trees, but I just don't what the allure for targeting tree skiing is. The trees cause ruts to build up between them and you always have to worry about catching an edge or letting the speed get away from you, and getting seriously hurt. Spending a short time each day in the trees is fine with me, in fact its' mandatory. But I wouldn't want to push my luck. Like that Steamboat Powder Cats video, I don't understand why I would ever want to expose myself to skiing tight trees like that for more than just a short period of time . Like I said, I'm no WUS and am usually the most adventurous in my group, by far!
The reason Steamboat's trees are so hyped are that they're not tight at all: they're spaced perfectly for making turns in. There are tighter trees too, but a lot of the best areas (Shadows, Closet) are just made to tear through without too much worry of mental damage. Plus, Steamboat's runs get tracked out in a hurry and there's really no choice but to go all trees all day.
I've always found a more serene, natural quality to tree skiing that can't be replicated on runs. Less (hopefully no) people, more solitude, quiet, etc. Plus it's an extra challenge weaving in and out of trees. The ruts definitely suck, but trees are really best on or near a powder day. Once it's a big mogul field littered with thick trunks, I agree: stay away.