I'm not a lawyer but I think licenses like this have a potential to be very problematic. Even the termination clause of the GPL has turned out to be challengin

I'm not a lawyer but I think licenses like this have a potential to be very problematic. Even the termination clause of the GPL has turned out to be challenging and primarily is not an issue because it's being ignored / re-instantiated despite the license text. If a court however would ever rule on this, that might be problematic. (Also the fact that this license was not written by a lawyer in itself seems … less than ideal)