I always find it amazing how many people claim to know men who they know were definitely falsely accused. It really is extraordinary. Really?
Let me see how extraordinary!
Man 1: administrtor in a school walking down a corridor woth files in his hands. 3 girls stood across the corridor. Man says "Excuse me" Girls don't respond. Man repeats "Excsue me" Girls look at him and move slightly. Man walks past them.
A week later he is out on garden leave, they have made a serious accusation, hetouched them sexually. Long story short, he was hounded out of his job 6 months before retirement and would have lost a significant chunk of benefits, pension etc. It took 4 years of legal action to undo the damage they did. They actually bragged about 'taking him down' on facebook! I was witness to the incident and the one who found their facebook bragging - neither the school or the police had found it!
Man 2 A colleague of DHs. Working away and got a visit on site from 2 policemen who were very clear and loud that they were arresting him on suspicion of a sex crime. Months later he was told who was making the accusation and could finally start to properly refute it. That is months later he was given more detail than "on a day between X and Y" Turned out to be a woman in a bar who had a precarious past felt he had snubbed her and would make him pay. DH and 4 other colleagues were witnesses, as were the landlord and bar staff - all males and so were not immediately believed, old boys club and all that! DH and his colleagues still get warned to behave themselves, they are in their 50s and 60s and their female boss believes this is a reasonable caution for her to give... once a month or so!
Man 3 More anecdotal as I was too young to know the details. A teacher left school suddenly. Rumours were he had 'a young girl pregnant' After police were called and school was involved he was hounded out by parents and gossip.. Turned out the girl was his sister and he was housng her as their father had thrown her out! But the local grapevine wasn't having that.
So yes. I do think it is more prevalent than some might think. It really isn't helpful to hold the 'truth' that women do not lie about rape. Women are human and some of them lie and are quite vile in their attitudes and behaviours.