I think that the most important thing is to know what YOU are comfortable with. So it is hard to make decision on what OTHER people are ok or not ok. Way too many factors in this as well; training, experience or lack there of, time in type, type of helicopter, mission, light conditions, local knowledge, weather reporting accuracy, ect.. the list goes on. Flights/conditions could be safe and acceptable to one individual, and very dangerous for another.
The important thing, which it seems like you are trying to do here is to always learn form any and every source you can. Know your limits and stick to them. How will you know your limits if you never experience for yourself nearing these limits. The trick is to figure out how to reach these and turn back/stop before surpassing them. If you can successfully do this, you will find that your limits will slowly increase, often then the limits of the machine or your body will be stopping point. This is the point where you can then learn and adapt a great deal from others, either their mistakes or their reaching the mechanical limits.
For myself, that forecast would have to be evaluated based on all of the things I mentioned earlier. If I was in a familiar aircraft in familiar terrain, I would not think twice. Although I also have extensive experience flying around mountains. This past summer found my limits at times and have had to say no, lets try it this way, other time just flat out "not in these conditions". It happens.
My most memorable and surprising even to myself, was successfully moving a drill with a long line in the mountains with 50 knot gusty winds. I remember telling the ground crew "we will try, but there is a very good probability that this will not be possible" & after we were done putting the drill back together "I can not believe we just did that".
So is my limit 50 knots or 60 knots. I would have to say that was at the limit of myself, now I know. This still does not mean that I would do the same for sure if it is 40 knots. EVERY TIME the situation needs to be re-evaluated.
Fly safe and keep improving!