I think it broke because you didnt install it properly. I have a K&N Typhoon with AEM bypass valve on my 03 Accord EX-V6 and it has been 6 months, the valve is in great shape.
When installing the intake, it should be properly connected so that it doesnt move. This is the mistake most people do.
Make sure the filter and the intake is properly secured from both ends and you should be OK.