To be clear, Peter Madsen has nothing to do with Copenhagen Suborbitals, and hasn't had for quite a while.
He seems to have left the project four years ago. I suspect the murder might have an impact on the public relations side of things, but I'm also pretty sure people who do donate to them do their research better.
Correct!
For those interested (and can live with Google Translate) they have a very active and informative blog on: