We have more than enough beautiful drawings and pie in the sky dreams, these do not advance the end goal of having and regularly using cheap manned access to space.
These guys are not just making beautiful drawings, and I fail to see how they are not advancing the end goal of having regular and cheap crewed access to space.
I don't know what their end goal actually is, assuming they can actually put capsules into space. I think that issue is something which legitimately needs to be brought up. There is a history of some "open source projects" (Gracenote comes to mind) where once a pile of money starts flowing and the project gets on a firm footing financially that the volunteers get left behind in the dust. The Wikimedia Foundation is another such project that isn't quite so bad, but Jimmy Wales definitely could have completely sold out the community in the past and definitely did in some ways too so far as there are some people making a huge pile of money off of Wikipedia content, even if indirectly.
I don't mind the fact that Kristian Von Bengston is dreaming big. We need that in this universe, where people who dream big can actually accomplish things. If he tries and fails, he is but one more person who has definitely been in that situation before. Jim Benson was another such dreamer in commercial spaceflight that tried and failed.... but provided the groundwork for others to follow that really did help. I could name a great many others that can definitely fit in that list, including I might add Werner Von Braun..... who even got his start from Hermann Oberth if you want to follow an interesting engineering pedigree. We won't get into space without folks like this. I'll even say that Kristian Von Bengston is leading a resurgance of private spaceflight for the European Union, which I find awesome in so many ways for just that point too.
And the really amazing thing is that Copenhagen Suborbitals is doing all of this with very minimal amounts of tax dollars involved. There is a sort of libertarian side of me that is just screaming "He gets it!" on that point too. This could be a huge government boondoggle with pork flowing all over the EU as yet another ESA project for going to the Moon or something like that. Instead, it is private money that is paying for the bulk of what is going on, even if it is donations. That by itself is proof of some significant support for spaceflight