Hello Riccardo
No prob, I'm used to it. conspiracy theories are the norm when you're trying to do something good for the community 
Each repo will be managed by the original author. It's not mandatory to have it there. They will need to be published with an open source license like Arduino (preferably LGPL)
We want to provide a space where libraries can be "kept alive", sometimes people stop working on them and they tend to "rot" so we want them to continue being useful.
The requirement is that the code needs to work with the boards listed in the Arduino IDE (they need to work out of the box otherwise it's hell for beginners).
This could lead to some degree of automation when people want to add a library to their IDE we could let them pick from this repo and keep them up to date.
Have you written any libraries?
m