So both of you are implying there is absolutely nothing the aviation community can do now/soon to improve retention. So they're SOL for the next 10+ years?
Accession requirements are driven by the need for O-1 and O-2s, in this case flight school (as what the article mentioned). When flight school was significantly backed a few years back, the accession numbers went down - regardless of what retention numbers were. Now that the flight school pipeline is opening/continues to open - that allows for the opportunity to flow more O-1s/ENS in from the commissioning sources.
Additionally, on the OCS front, they are the only accession source that can support shortfalls from Navy ROTC and USNA. If a Midshipman, who is service assigned aviation, drops (for a variety of reasons such as medical, legal, or just didn't want to commission), they cannot be replaced because all other Midshipmen already have their service assignment. So, that is where Navy Recruiting Command comes in to make up for the loss.
For retention, both the community and big Navy CAN improve retention for a variety of things, such as bonuses or offering more career flexibility. Additionally, for gapped department head billets, they can be filled from the reserve side, which I have seen, in which a qualified reserve naval aviator comes back on active duty to cover the gap.