And who decides if the call was legit?
Probably why the existing law is rarely enforced.
This smells like Title IX and the Guilty having to prove their Innocence at the discretion of others. Otherwise, how would it be any different / more enforceable than existing law? Someone has to make that call, and I bet it will be inherently subjective and biased as to when it is enforced.
The burden of proof in criminal court is beyond reasonable doubt. If something about the state of mind of the person making the report is part of the law, it must be proven. Which is where I'm having trouble with this being different from existing law. Possibly for different penalties. I wonder if the effort is more to raise visibility of it being criminal as a deterrent, but I don't think that would do much, and the problem with the attempt is that unless it passes and that knowledge spreads, reporting on this makes it seem that it is currently legal to make a fake 911 call in order to harass someone.
Re: Title IX, the standard is preponderance of evidence (more likely than not). It is also not "presumed guilty" by any stretch. It is certainly reasonable that a case of he said-she said may work out meeting that burden with out any other evidence. Technically, beyond reasonable doubt can also be demonstrated based on single eyewitness testimony, but it is much more rare.