TRPillers often say that MOST rape accusations are false. How true is that ? Do they have any evidence for their claims?

According to the FBI in the USA(1997) about 8% of rape accusations were false or "unfounded".

Some feminists will tell you that only 2% of rape accusations are false while the MRAs will go as far as to tell you that 40% of rape accusations are false. TRPillers of course often say that the majority of rape accusations are false. Who is right ? We don't know for sure .

However , one must consider that rape is estimated to be an extremely underreported crime . I personally think it is because a lot of people don't trust the police, especially when it comes to such personal issues. Here in Greece the police is viewed as so untrustworthy that people don't even report getting mugged or robbed (I literally know people that got their houses robbed and never reported it because the Greek police is considered a joke). Another reason could be that women are embarrassed , or they think that they have no way to prove they were raped.

What do you think ? Is it unwise of TRPillers to shamelessly claim that "most rape accusations are false"?