Well after hours trying to find the issue, the problem is basically related to the app permisions. I hope I can help some people in case anyone faces such an error.
According to the expo docs the behaviour by defaulf of
But thats not completely right, since android uses the native app for the facebook login. That was basically the problem, the phone I was using had Facebook with an account ready on it.
What I did to solve it : Add the account as a tester in the Facebook Developers Dashboard.