IIRC they from outset aimed at fast-paced promotion of carrier/aviation officers, based off US model. I am not on pay to go study PLA careers, but 12 years is enough to run through this cycle. They had both positive and negative examples before their faces, it didn't take much research to do the right choice.
Granted, it's too early for fully carrier aviation pilots to grow to command, but this isn't an absolute must requirement.
Decade isn't that short to anyhow dismiss chinese carrier branch - not anymore.