It's a difficult balance to strike. I think there's an argument for this type of crime being treated differently, as if it helps the police's enquiries, to put out the name even at a time before charging - then the need to do so might out-weigh the need for the potential perpetrator's anonymity.
In this particular case, they seem to have felt there wasn't much evidence for the CPS, so the only way to garner a bit more might have been to float it out there, and see if anyone else came forward. This is presumably done with the potential plaintiff in mind.
Having been at the 'victim' end of an harassment case - twice - same perpetrator, mysteriously found innocent first time and finally banged to rights second - I can tell you from the inside of the system, EVERYTHING is weighted towards the defendant. Everything. The burden of proof is so high that even a palpably guilty person can walk free - as happened the first time in my harasser's case. Victims are made to feel like criminals - I was even followed into the toilet by court officials, in case I spoke with another witness. Yet the offender waltzed off to the loos, alone. I had to back up everything I said. The criminal - didn't. He told blatant lies under oath - and was instantly believed, even when a police officer tried to take the stand to point out he was lying...
Second time, even though he was found Guilty, everything was weighted in his favour. I wasn't even told I could make a victim impact statement - so I didn't submit one - so he got a suspended sentence. After years of trauma. I had to walk into court to take the stand right past all his friends and family, glaring at me. It was horrible. Even found guilty - he walked away scot free. I do feel for the victim in the case who has come forward and simply doesn't have enough for the CPS to go with.
I think the more sabre rattling goes on, the more risky it is that some other victim - with stronger evidence - could come forward so it is a dangerous game to play. In theory, I totally get innocent before proven guilty - but the reality is, even when they're found guilty, to get to that point, the system treats the victims very, very shabbily.
So it's time to weight it in their favour. Especially in cases like this, or things like harassment, where the fact is, it's rare even to get it to court, and the burden of proof is much higher than people who have only read about it in theory and not experienced it at the sharp end, would imagine.