if that's your "good legal reason" to avoid the GPL, then it's just as much a "good legal reason" not to open source your work at all: if the GPL is not enforceable, that would mean you have used a non-copyleft license, which according to you is the thing you want to avoid for good legal reasons.
if that's your "good legal reason" to avoid the GPL, then it's just as much a "good legal reason" not to open source your work at all: if the GPL is not enforceable, that would mean you have used a non-copyleft license, which according to you is the thing you want to avoid for good legal reasons.