Do we have a fake whistle-blower. That guy/gal must be exposed and prosecuted for lying to get whistle-blower status and protection. He/she is a fraud and must come before the bar of justice. The whistle-blower law must be protected for the genuine ones.
If the ‘whistleblower’ doesn’t have first-hand knowledge or any other evidence, then he/she isn’t a whistleblower and doesn’t have any protection ultimately.