It is absolute nonsense that people accused of sex crimes are treated worse than people accused of other crimes. Clearly people accused of murder, terrorism, violent assaults on babies, conning elderly people out of money do not have their reputations unscathed 
The real reason for this is that lots of people think women and children are malicious little liars who get kicks out of accusing innocent men of sex crimes for kicks. Of course this is an absolute myth, the rate of false reporting is similar to other crimes. Still, this idea that women and children are dirty liars just won't go away will it.
Handy for the people who want to bring this in just when the investigations into powerful people and paedophile rings is about to get underway
for the people keen on transparency you don't get more transparent than that.
Personally with our media being the utter scum they are I can see the need to do something, but whatever needs to be done needs to be for all crimes else the only impact is that, in direct contravention to all the "lessons learnt" in Rotherham, with jimmy Saville, in various childrens' homes and etc etc a truly terrible long list, everyone in society and in authority and involved in investigating these crimes has it confirmed BY LAW that women and children are almost certainly lying when they report sex crimes.
The motivation of the politicians in this is clear. The motivation of some supporters can also be guessed at. But the others? No fucking clue.