Why would axiom be included if it is CPU only?
Completeness and consistency mainly. Also, miner control CAN be configured for cpu mining. There are also private GPU miners for axiom.
Actually there aren't, or there shouldn't be.
https://bitcointalk.org/index.php?topic=1135151.0 states that axiom is designed to be CPU only. No big deal, just wasted work for you guys. I just didn't configure it...
Axiom is NOT a CPU only algo. The OP clearly acknowledges the existence of GPU miners...doesn't matter what it was "intended" as.
It is a moot point, however, as MC is designed to be an interface for any miner, be it CPU/GPU/FPGA/ASIC (with the right configurations, of course). So arguing that an algo shouldn't be included because it is "CPU only" (even when that isn't true) just doesn't make sense.