No. Full Stop.
It is never too late to report sexual abuse or rape, regardless of a lack of evidence or witnesses.
Even if statitute of limitations may have expired in some states, an affidavit will still go on the record, and should any future complaints be filed, or recent accusations made against the same individual, than this will serve to give credibility towards other victims.
We see men bravely come forward now on a weekly/monthly basis who are speaking for the first times publicly about abuse/rape they suffered as children by the hands of trusted men of their childhood communities: Priests/Preachers, Teachers, Coaches, Scout Leaders, or their friend's fathers, etc..
We believe them, although decades may have past, and they have no evidence other than their own memories and experiences to tell.
This should be no different for anyone else: not women, children, teens - IDC if the victim is a sex trade worker/prostitute/street addict, there is never a point where "too much time has past" when it concerns sex crimes, nor should anyone coming forward at any point be shamed, harassed, called a liar, or forced to flee their homes for finally achieving the courage and self-esteem to report a horrifying incident that they were forced to endure by another person - ever.
The fact that we have to ask ourselves a question like this in the 21st century is repugnant.
Every single woman who's ever lived has had to endure some form of sexual harassment, sexual assault/unwanted touching, to outright rape.
Every. Single. Woman. throughout time.
Yet we've been taught forever to stay silent, don't tell, it's a woman's cross to bear, no one will believe you, etc., to the outrageous and extremes of: "You're over-reacting", "Can't you take a joke?", "I was just playing around.", "What the hell is wrong with you feminists?", etc..
E N O U G H
It's past time to stay silent, and just take it, while it insidiously and slowly destroys all of one's sense of self-worth and one's ability to know and understand that they are a person within their own rights and have the right to choose their independence and make all of their own choices in life as adults.
This must stop, and our generation must be the ones to start insuring that future generations will learn, know and continue to be committed to halting as much of this as possible.
There will always be some who rape/abuse, but we can see to it that we teach our children early and often that these things are NEVER OKAY, and that they understand this to the point that the great majority of them will be repulsed by the concept, and that they know to speak up and repot it should they see or experience it as quickly as they are able.