Julius may take heat for his opinion, but what if happens to be a true opinion? Open source does matter. It is why is it possible to support Android and why I won't use use a closed-source web browser.
In an age of a million Arena games past and present, a fair number open source (Sauterbraten/Cube, classic Nexuiz, Xonotic, Open Arena, Alien Arena, yada, yada ...) it can be difficult to justify to whole-heartedly back a closed source one.
Open source can be something as simple as commitment to open source 2 behind release.
I avoid almost all closed-source tools and wouldn't want to use, as an example, a closed source Quake map editor.
Isn't Unreal effectively open-source even if strictly licensed? Isn't Unity 3D open source? (I don't know, I'm not too interested in those, but I think they are. And if it isn't important, then why are they open source? Well --- they LIKE WINNING. That's why.)
You can say my opinion doesn't matter, but let's say this Kickstarter fails narrowly (misses by 20-40%), would it have made a difference between success and failure? Seems like in a near-miss scenario it certainly would. Closed source is shortsighted and hard to morally support; Android might be a failure if it weren't open source. Open source, regardless of license, makes things easier to support (Java, MySQL, etc.)
The problem with closed source to me is that it means that the authors don't have sufficiently deep intellectual and environmental awareness. In something like business-to-business this is just normal and ecosystems built on that model (console platforms), but outside that box, it is an intellectual litmus test.
If you can't pass the intellectual litmus test, what other short-sightedness is there in your thinking? John Carmack sees the pattern in the dominos. Sergey Brin sees the pattern in dominos. This is why it is easy support, say, John Carmack.
/Controversial thoughts, so be it ... So sue me ... (And my comments aren't related to this project, but how I think about projects in general. And either way, I wish Electro luck on this project.)
The night is young. How else can I annoy the world before sunsrise?
Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..