Apart from being far less accurate, I have never had any problems like splintering with bent aluminums nor have I heard of anyone else having any. I have seen several pictures of people who have had their carbons splinter on them. It looked pretty bad. That said I do shoot carbons occasionally, though I prefer my aluminums.
Honestly though, I don't see any reason to use bent or otherwise compromised arrows. They will hurt your accuracy. If you are attempting to improve your accuracy, hunt, or plain old have fun, bent arrows will really throw you off. JMHO
John