Your statement was ignorant because even a moment's reflection would have revealed just how such a situation may have come to pass. The "simple fact" is that the people who set the policy never anticipated that a commissioned officer would ever resign his commission to accept another commission at a lower paygrade; for that matter, there are no prior-officer enlisted pay scales, either. While I'm sure that such things happen, they are rare enough that they escape the notice of those who would set the rules regarding prior service pay. There is nothing "weird" about it; it is an understandable, if unfortunate, consequence of policies meant to cover the situations most likely to occur.
You're acting like someone actually made a considered decision to deny you and others like you the pay that should rightfully be yours. That didn't happen. They don't consider enlisted time "more valuable"; that it works out to be in practice is an understandable effect of the current pay policies. Don't like it? Write someone. They probably have no idea that this is happening to commissioned officers with years of honorable service. Who woulda thunk it? What a noble officer, though; selflessly sacrificing thousands of dollars in pay and benefits in order to serve as a healer for his fellow servicemembers and continue to serve his country! With the right spin, this could get on the national news as a wrong that absolutely must be righted, to give those who have already given so much a little well-deserved justice.