I wonder if anyone with some experience with bitcoind's source code could explain why the network layer and the data storage layer are not (or cannot be) suffic

I wonder if anyone with some experience with bitcoind's source code could explain why the network layer and the data storage layer are not (or cannot be) sufficiently abstracted to prevent some low-level data storage implementation detail like this from affecting the correctness of the propagation algorithm's behavior. This seems like an architectural flaw, but maybe there's something inherent to the bitcoin protocol that makes this type of incident inevitable?