I think Wolter is just like so many other detectives who have investigated this case and has let his personal feelings influence his judgement.
I think we would still be floundering around arguing about the next tranche of funding for Madeleine's case in which apparently "nothing was happening" if Amaral hadn't opened his mouth on Saunokonoko's December 2019 podcast.
I think the investigation which had been well underway by that stage might have benefitted from a little more confidentiality to get on with the job.
I don't think it had been the intention to release Brueckner's name into the public domain as happened.
On the bright side the spoiler had some positive results.
For example a rape victim recognised similarities with the rape perpetrated by Brueckner and was able to take action as a result and other neglected sexual assaults ended up receiving the attention they deserved.
I think Wolter's hand was forced before he was ready; I think that far from going on an ego trip he was making the best of a bad job and turned the premature release of confidential information to his advantage.