I don't tend to care what anyone else does, as it pertains to my safety, I'll reserve the luxury of determining my own safety.
There's a big difference in a "safe" trigger and a "secure" trigger. Certain firearm designs do, indeed, become insecure - often called "unsafe" - when the spring weight is reduced too much, the sear engagement is no longer secure. In these instances, if you run the bolt too hard, jar the rifle, etc, it may fire, uncontrollably and unintentionally.
The only disadvantage of hunting with a hyperlight - yet SECURE - trigger is finger sensation. If you're hunting in the cold and wearing gloves, then you might not feel the pressure of your glove against the trigger. If you're hunting in the cold and NOT wearing gloves, then you run the risk of having slightly desensitized fingertips, so again, you might not feel the pressure of your finger against the trigger. Having a trigger that doesn't function the way the shooter intends is not safe, even if you could drop it out of a 3 story window with the safety off and not fire.
I tend to like a 1.5-2lb trigger for hunting, but do have a couple rifles that are under that mark. Same trigger weight in rifles and revolvers.
However, I would mention that I'm also a huge 2 stage trigger fan. If I could find 2 stage triggers for all of my firearm models, I would have them. That lets me pull up a 3-4lb total weight with a nice and light sub-2lb break. But I can't find myself tolerant of 4lb single stage triggers.
Insecure triggers/sears are dangerous. Improperly sprung triggers can fire when the safety is released, the bolt is closed or opened, when the bolt is ran too hard, when the rifle is bumped or jarred or dropped... etc etc etc... The only real way to test it would be to put it through the same type of conditions that it might experience in an accident. Turn down the trigger, and drop it 30ft - repeatedly - out of a treestand. I tend to prefer NOT doing that to my rifles, so I don't do that kind of testing. To do exhaustive testing to ensure the security of your mechanism, well, frankly, the average hunter just isn't properly equipped.