He fits the profile of a possible abductor well, doesn't he. (if you take the McCanns word for it that Maddie was actually abducted in the first place)
Lived & worked in & around Luz
Broke into apartments, robbed & raped.
Exposed himself in playgrounds & on beaches.
Molested children & filmed it.
Talked about the case.
Told a paedo he murdered Maddie & destroyed the evidence.
Great, one major flaw in all this is that Maddie would have been his one-off child abduction & murder.
There aren't a string of murders or missing kids that can be in anyway linked to him, that much is obvious.
So, he commits the perfect crime, enjoys it that much he can't stop bragging to his mates about this success, but then decides never to carry out any similar abductions & murders ever again, despite being really good at it.
Just run a kiosk, sell drugs & expose himself in playgrounds.
So why only the one? Why didn't he carry on doing it, I mean he said he wanted to catch a little one & abuse it for days, didn't he?
So why didn't he? He was quite capable, apparently.
Maybe because he simply didn't abduct Maddie in the first place, that's possible isn't it.