Maybe I can provide some insight as to why a team wouldn't use CAN. My team chooses not to use CAN for two big reasons:
- We've had multiple Jags fail in testing
- We haven't had a Victor fail in testing or in our past 10 competitions (not sure about before then- that was before I joined)
The features CAN offers are appealing, but the implementation is prone to failure, at least in my team's case.