Many trumpet the problems with patent infringement cases, particularly in the odd calculations of "damages one would have avoided if the infringement potential were known". Few trumpet the real cases of fear, uncertainty, or doubt killing business opportunities. Acquisitions are called off when the IP review finds GPL in a product, or your proprietary networking technology losing its patent protection to Amazon (because someone signed up for AWS for a month, years ago).
I believe WordPress made the correct leap not to embrace a "license taint" that would smell bad to cautious users.