Nobody said he is no risk - how can we know? The advice is, essentially, to keep the kids away from him but not to move or try to force him out. Secondly, to think about how we educate our kids about the dangers of predatory men.
Look, this isn't academic for me any more than it is for you or the OP. I've already mentioned how a loved family member got done for this crime and how shocking it was for me, as I completely trusted him and used to go with him for days out with my kids.
But also, I'm a child of the 70s and was very much raised on the idea that you could spot a predator because they all wore dirty raincoats, said "come here, little girl", and had pockets full of sweeties and kittens. That education really failed me. I was 4 the first time a man stuck his hand up my skirt and into my pants. I was holding my mum's hand on the escalator FGS, and she didn't notice. I whipped my hand round and he smiled at me. Bad men don't smile, do they? So I just stared ahead and pretended it wasn't happening.
A few years later, a friend of my mum's engaged me in a conversation about what kind of Page 3 images turned me on? I was making a cup of tea while my mum finished her phone call upstairs. I just froze, so ingrained it was in me to think that (a) family friends couldn't be bad people and (b) I had to be polite to grown-ups.
Anyway, the point is that with my own teenage daughters I've tried to educate them to spot predatory behaviours rather than predatory people, that it isn't rude to protect themselves from anything that makes them feel uncomfortable, and that they dont owe it to people to justify their 'no'.
So, that's me trying to be helpful. Nobody wants a predatory man next door, and nobody on this thread has said it's a non-issue. It's ridiculous to imply some of us are covert pedos because you don't like or don't understand what we are saying.