If he's innocent, and I think he is, a young guy isn't really going to take that much notice about a missing child. The fact we're interested doesn't mean the rest of the world is.
On the contrary - this young man was more than interested in a missing English child.
In the spring of 2008 at the Spanish Kite music festival, Orgiva, Christian B reportedly told his friend Helge B. that he'd been involved in Madeleine's abduction the previous May. Unconfirmed reports say he told police at the time.
https://www.dailymail.co.uk/news/article-8720485/Witness-helped-launch-Madeleine-McCann-investigation-says-Christian-Brueckner-guilty.htmlThe same man also attended a clandestine meeting with SY detectives in Athens, 2017 and gave them information about Christian B.
Helge B's friend & partner-in-crime Manfred S intimated during thee Discovery+ documentary that Helge B may have approached SY in 2017 for the reward money ("he'd sell his own mother") yet that doesn't ring true knowing there was £1m on offer in 2008 but only £20,000 in 2017.
Between 2012 & 2014, whilst running a kiosk in Braunschweig, Germany, Christian B again reportedly expressed knowledge of knowing what had happened to Madeleine.
https://www.dailymail.co.uk/news/article-8395465/Christian-Brueckner-lost-group-discussed-Madeleine-McCann-case.htmlIn May 2017, Christian B also allegedly confessed to a drinking pal that he knew what had happened to Madeleine McCann. He also allegedly showed a video of himself raping an unknown woman to the same pal. This pal was not Helge B, who was in Greece at that time.
https://www.dailymail.co.uk/news/article-8440941/Christian-Brueckner-TOLD-authorities-predator-YEAR-Madeleine-McCann-disappeared.htmlThere are 3 different witnesses who have reportedly told the authorities that Christian B, at the very least, knows what happened to Madeleine and that she's dead.
Another of Christian B's close friends in Luz, Austrian self-confessed drug dealer Michael T, was also interested enough in this case of a missing British girl to closely follow the 2019 Netflix documentary about her and make a connection to Christian B.
When BKA said in their appeal that others may have knowledge about the course of this crime, they weren't wrong. The burning question is - why now?