Maybe, but you do realise there's more to gym than lifting the heaviest possible weight you can? You can get a heck of a lot more from lighter weight by concentrating on proper form and more explosive movements. Of course it may not be as much an ego boost, and if that's what motivates you then it's not for you.
It all relates to your goals.
Compound exercises use the same principal - you can push heavier weight with leg press than squats, since you're not engaging as much core, shoulders, etc. regardless, squats are considered a superior exercise, and engaging more fibre can encourage higher testosterone production and overall growth.
I personally, have seen most of my improvement to my physique by going heavy on compound lifts, eg. Deadlift, Squats, Bench Press, OHP, Pendlay rows.
Thus for me, on compound, go heavy. When it comes to isolated exercises, then I don't go as heavy, do more reps, focus on time under tension, timing and so on.
Deadlift however, I don't see the point in going light, most of my progress on how my back look, come straight from going as heavy as possible on deadlift, whist being able to keep form correct. Doing a shrug at the top however breaks form. Doing shrugs separate grew traps more for me, I don't know why, but doing them with dumbbells seem far superior to doing them with a barbell.
So I never said you should go heavy on every single exercise, it depends on what type of exercise it is, both isolated and compound have their place.
I read an article actually, that both methods work, low weight with many reps, heavy weight with few reps, and both will in the end get you the same goal, BUT they won't be equally effective. For me, having the strength that goes with looks is much more awesome than having the looks, but are weak. Also, as you get older, you will realize its easier to keep the strength than the looks. So IMHO, to each their own, I like to stay effective with the exercises I do.
ps. If you traps are too big, it will make your shoulders look small in comparison, and you will end up having a strange look on your body. So keep traps in moderation, in fact I don't actually target them, since they grow enough on their own, otherwise my shoulders will just look way too small.