I will say that it does seem a bit strange that 3PO’s programming prevents him from translating the dagger directly, but he himself admits that he knows where the wayfinder is located… like what’s stopping him from just telling the trio, “Hey, Endor is a nice place this time of year.” wink wink
Yeah I didn’t have much of an issue with 3PO’s programming conveniently restricting him for the sake of the plot, since we’ve seen that before in ROTJ, the thing that really, really bugs me is that they literally give him a line in the film to explain the reason his programming prohibits it, by having him say something like “I believe the rule was passed in the senate of the old republic” but for some reason they seem to consciously make an effort to draw attention away from the explanation by having the giant snake creep up and hiss loudly. I wish there was some way to better incorporate this reasoning into the film in a way audiences can actually pick up on it.