WHAT causes? You mean destroying linux? He seems to believe in that pretty strongly!!!
Florian WAS a good ally in the fight against software patents. But he seems to have become a "disillusioned collaborator". He's quite happy to argue - with mathematicians - that "software isn't maths".
He argues "we've lost the fight against patents, we need to live with it". Well, software patents are illegal, and we need to make sure that that comes out!
What Florian wants is for the GPL and patents to "mutually coexist". Never mind that mutual coexistence will promptly trigger the GPL's self-destruct clause. But, given his behaviour in the MySQL case, it's highly likely that's what he wants...