I agree with Dunster, this "foundation" is just a private thing, it is not bitcoin. Satoshi a founder? Did he sign? Or the "foundation" members happily added him? So now i can make the GABI FOUNDATION and have as founder satoshi as well?

Yes. And you can have Donald Duck as your "spiritual leader" if you like.
Now imagine if they add me as a founder member. Without my consent. This clearly would not be acceptable because i am not a founder and i never signed to be one.
Darn, the tubes lost my longer post, so this will have to do:
Agreed. The Foundation should simply add the word "honorary" to the text regarding Satoshi's membership and I'll be satisfied.
Until they clarify this, I will assume they have inappropriately claimed Satoshi's support in a bid to attain some exclusive authority that Satoshi's endorsement would imply.
The Foundation should speak for it's members and other foundations can speak for their members. That is the decentralized philosophy of Bitcoin and the Foundation should strictly adhere to that philosophy. Gavin, for example, has always claimed he supports the development of other bitcoin clients.
Since this could be addressed with a trivial fix of adding one word to the text, I will assume this is an ongoing deception on the part of the Foundation and I suspect it will remain a sticking point in the Foundation's relationship with the broader Bitcoin community until it is addressed.