Probably the take defense attys get the most flak over, but especially when alcohol, family issues, or multiple partners are at play...false accusations happen more often than most people would believe. And not necessarily always with ill intentions. Sometimes it just spirals
We don't actually have a good idea how often women lie about being raped. Short of a confession, very difficult to prove.
But if you've defended rape cases, you've seen alleged victims contradicted by text messages, eyewitnesses, and physical evidence. Fairly often.