Yes, fw bunkers are probably the hardest shot for average golfers. They shouldn't be too abundent on public courses.
As to the relevant advantages, I wonder how many average golfers are in a match with better players for whom this might be a problem? Most events are scrambles, teams, or at the very least, a handicapped match to allow (perhaps) for that extra recovery stroke.
There is also placement. It is not uncommon for more bunkers to be placed left than right, on the theory that bad golfers slice and good ones hook, etc. Or, just place them at 290-300 from the back tees, and keep the mid tees at a distance where most average golfers just come up short. Of course, if we were religious about that, I guess we could then design the fw bunkers as deep as we wanted to challenge the better players.
Problem is, on most courses, we want ALL paying customers to experience all the course has to offer for their greens fee (better players don't pay more, do they?) and thus, in many ways, locate bunkers for all, and then make them reasonable to escape. Cynics will say this is designing to the lowest common denominator, and it is. Perhaps not championship architecture, but then, how many courses do we need that are strict tests of golf? How many do we need that are fun? Based on the percentage of average golfers, probably 99% in the latter category.