Earlier quoted context omitted.
I think there's a distinction to be made between "a nuisance complaint" and "a legitimate complaint whose presumptive odds of succeeding in court are less than guaranteed"
When the odds of success are 99% but not 100%, that's not going to deter a lot of people. When the odds of success are 50/50, in this context that's a nuisance complaint because making it "free" to turn all of those into real adjudications would flood the system with exactly the cases where the outcome is unclear which are correspondingly the hardest to efficiently resolve. The only practical way to address that is t…
1% might not deter, but I bet it still deters more than you want. 10% will deter a lot despite those being cases that should happen. Especially because these non-experts don't know the actual odds. Their fuzzy guessing range is going to include worrying amounts of failure chance even for very strong cases.