I agree. The position of the trigger pin has little to do with weight, but everything to do with the creep or length of pull. I always put mine at a half inch from the sear bar. Moving it closer does not really "lighten" the pull, but makes it way longer. Once I put a trigger in at 3/8", listening to all the advice I had been getting. Well, it was a light pull (mostly thanks to the light springs), but MAN, when you pulled the trigger you wondered when it would ever let off!!!
So, I don't do that anymore! I don't see how people get away with putting them even closer than that!
The sear spring (and whether or not you have proper angles on the sear and tumbler notch) is far more important to pull weight.
I've not gotten to take apart a whole lot of old guns, but of the ones I have, ALL of them have had triggers pinned at least a half inch. Closer to 3/4"!!! and they have HEAVY sear springs... I guess they just lived with heavy trigger pulls!