Users who didn't made a report in the last 30 days, normally couldn't find anything in their history.
If you mean that you have for example less than 10 reports and you couldn't see how many are good/bad/unhandled then probably you are right about the minimum requirement (even if i don't understand the reason behind it)
Potential reasons could be to prevent users who aren't posting regular enough to complain about their reports not being handled or being marked bad which I expressed my concerns about earlier in the thread. Could also be that users who don't report regular don't need access to the in depth data that the regulars do.