I remember a couple of scary things I have read about on here that may back up this survey.
One was a survey (I think it may have been on students) that asked men if they would rape a woman if they thought they would definitely get away with it. Shockingly one in five men said yes.
And the other sad fact that has stuck in my brain was from when that poor 14 year old girl was gang raped in the US and one of the rapists filmed it and put it on Pornhub. Even though she was a child and it was clearly rape, she couldn't get Pornhub to take it down.
But even more disturbing than that, it was one of the most popular things to watch on Pornhub for ages and I think they estimated that one in five men in the US actively searched for it.
It may have these figures slightly wrong, but it all points to a depressing number of men being unsafe.