You're confusing the resulting damage with the triggering damage. Bonus spirit damage is the triggered effect. "Causing abilities dealing more than 165 damage" is the triggering damage. The "highlighted" spirit damage icon is referring to the damage you get from this item, and has nothing to...
Even if you have a direct line of thought with the developers, I think they'd agree that the descriptions need to be literal for sake of clarity. I don't care if it's the intent that these abilities are restricted for whatever reasons. Fix the description if that's the case.
Tankbuster and Reverb do not state anything about not working with non-spirit damage abilities. Abilities like Spirit burn specify they only trigger on Spirit Damage. Puddle Punch also works with other items like Mercurial Magnum, Surge of Power, etc. that do not have a difference in wording...
T3 Puddle Punch will put both Melee Charge + Crushing Fists on Cooldown but not gain the damage bonus. I'm sure that at one point Melee Charge + Puddle Punch worked correctly. If they're not supposed to work together, I wouldn't expect them to go on cooldown.
