But throws that do 200+ HP a pop in damage while also lagging you at least as well as trip and potentially nuke defenses via GC controls maledicts means you might only have 2 or 3 commands to work with.

It may just be the throw edge tipping assassins over the edge, but the culmination of factors over time leads to a feeling of frustration, especially against a stealth class. Or when you wish you could be half as effective as a ranger, or a thief, or when you play a hand spec, and have a throw negate your spec choice and still get thrown to death... Makes you think... hrmmm... should have just played assassin.