@koakuma A weak license almost always does a poor job of preventing other people from suing you over your own work.

Meanwhile the GPLv3 contains a patent license, meaning that if some business decides to write a derivative work of the software, they have no grounds to sue you - as the needed patents have been licensed.

With weak licenses like MIT expat, a business can go and make changes to the software and then sue you with software patents to stop you from competing with their proprietary version.

The only weak license I'm aware of that has a patent license is Apache 2.0.

An individual doesn't always need to enforce the GPLv3-or-later personally - there are some lawyers that are willing to sue for you as long as they get the damages and if the same result of a weak license is wanted, then the license can go unenforced.