Severe punishment needs to follow such false claims and I hope that the authorities will dig deep into the no corroboration...
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There is a very power sociological argument against this position that is that it’s already very difficult for real victims to come forward, for a variety of reasons, probably the highest of which is shame and and desire to avoid a lot of negative attention, but more importantly to this point is the fear that you will not be taken seriously by authorities and even punished for doing so.
So the problem is, how can you punish false accusers (who make victims out of people just like rapists make victims out of people) and not dissuade reporting of real rape victims?
The balance has obviously gone far toward not scaring and discouraging rape victims, but recent events have flipped the other side of the victim coin into the spotlight and these are real people too with real lives.
There are no sound sociological arguments against what was proposed as you purport. For victims to be protected, false accusations must be dealt with severely.
Making it safe for real victims to come forward is a completely separate matter from how we treat false accusers. Conflating the two is harmful to all.