I still don't think it matters one bit in a service or combat weapon.
Other than a fine target weapon does it really matter?
First off let's agree that there is a LOT of the shooting world in between "fine target weapon" and "service or combat weapon."
Pervious generations have long held that one can shoot a gun with a good trigger and bad sights better (more accurately) than a gun with good sights and a bad trigger.
Also understand that a heavy trigger is not a bad" trigger automatically. The pull weight is a separate matter.
I will accept a poor (relatively speaking) trigger on a bellygun that I would never tolerate on a deer rifle. There is a lot of shooting that requires more than COM @ 7yds accuracy.
One can adapt (learn) to compensate for a poor trigger, IF, and as long as the trigger is consistent and repeatable. If it isn't, you simply cannot.
One of the WORST triggers I have come across in recent memory was on a GLock compact .45ACP (I forget the model #).
The pull itself wasn't too bad, but it was
inconsistent! Every time the gun fired, it was at a different point in the trigger pull. We fired a couple hundred rounds, and could find no pattern, it was just random seeming. One round would fire with a fairly easy pull, the next would seem to take three days of pulling on the trigger to get it to fire, and the round after that would be in yet another place on the trigger pull. You could hit somewhere COM at short range, but everything beyond that was more luck than anything else.
That gun was picked up on a Friday, shot on Sunday, and returned to the shop on Monday!
There is a good reason for long, heavy triggers on combat guns. A reason for two stage triggers. But there is no reason for those kinds of triggers on ALL guns. And the pull on a combat gun doesn't have to be crap to be safe, either. But many are.