Golly - if that's the case, and FM is owned by Apple and your Apple iDevice is causing your FM app to be damaged, then I'd say it's something to bring up with FM ...
(Or, it's something else.)
To clarify I don't even know if the data actually does get damaged beyond repair since I was never be able to generate such an error dialog on iOS. I have, however, performed countless forced crashes, reboots and passive purges. The consistency check also seems faster than the one performed by FileMaker advanced.
Traditionally the consistency check eliminates bad blocks or re-connects broken ones when there is a computer crash. The iOS SDK does not seem to distinguish between a crash and a purge. It behaves in the same fashion as FileMaker Go.