I think Mofire is right. As cams get more agressive a stiffer arrow may be called for. However, there are lots of carbon arrows that can work well with any bow made just so long as they are spined right for the bow setup. There are carbon arrows that are light and there are some that are quite heavy in weight. You just have to look at such things when searching for the right arrow.
Actually todays bows would not have the speed ratings they do if they were rated shooting aluminum arrows. It's pretty hard to get properly spined aluminum arrows down to a weight of 5gr per pound of bow weight, unless shooting an overdraw, which nobody does anymore. That's one of the reasons carbon arrows are so popular in the first place. That, and they are just more durable over a longer period of time. Many times they'll survive some nasty hit that would bend an aluminum arrow. Plus they are FIT a larger variance of bow weight for a given spine rating whereas aluminum can be touchy if changing a bow just a few pounds.
That doesn't mean aluminum can't be good. They've stood the test of time. Just that properly spined carbons a more versatile.