Duty Complete should mean duty complete :)

[Raven2014]

Oh, duty complete parties wiping with people who haven't seen mechanics or phases are 100% on me now???

Yes, because you could have left when you see that first time bonus pop up. The only reason this become such as big an issue you dramatizing up is simply due to you not exercising something that was fully within your control. Dishonesty is what get you in such party, but staying and wasting your time on it is your decision 100%.

9/10 if I see the bonus pop up without it mentioned up front I just left. I may stay for 1 or 2 pull if I'm a good mood but I would leave if it's clearly a trap. Why can not you?

Like you said you can use the tell option to get around the PF restriction, this is the honest and respectable thing to do.

The respectable thing is exercising the option that was given to you without trying to taking away from other people option just because it rubs you the wrong way.