You do know how contradicting it is what is being stated than right? One person says everyone can become a developer and contribute, but your only precaution is proper vetting of people. How? How are you going to check if nobody is going to leak the source?
When we first started it was me and Sapphire would could let someone in, and after that the 3 of us make the call, and 4 after that and so on.. so we make this as a group as to who can be trusted. Moreover, there is no motive to leak, everyone who has the source has put in a considerable amount of work and it would make no sense for them to leak their own work, and if that's not enough - everyone who has the source has voted closed source. If you have the skill and you can be trusted, you're in, and the same goes if you have the skill and you reverse engineer, good luck.
We are also making rapid progress, which we will be posting an update about soon and the closer we get to finishing the less new people will be needed as the project will be finished and therefore this will not be an issue. With how we're going to check, the developers who have the source are all close to each other, we spends hours a day on calls and talk every single day about topics that aren't even related to Cyclone, gaming together, and we have that trust element as friends beyond the development of Cyclone, infact some of us even worked on previous projects together that were closed source - so again past experiences with each other help.