And you successfully encourage kernel copyright holders to start caring and assign copyrights to the SFC, resulting in lawsuits being filed against code you can'teasily replace with something under a BSD license. Full marks.

Of course you can blame the people enforcing the license, but the fundamental problem here is the people who are infringing in the first place. Rewriting Busybox doesn't encourage people to stop infringing, it just makes them feel like they're less likely to get sued when they do.