If Vizio used GPL licensed software and did not follow its license rules, then they’re the ones breaking the license terms and GPL licensing of the product was always implied.
Not following the license terms have a name, stealing.
They are clearly committing copyright infringement, but plenty of a copyright infringement happens in practice and it is tolerated by the copyright owners. This is not what I am objecting to though. I am objecting to the idea that Vizio has a contract with a user to give them the source code of their proprietary software. If Vizio ignore a license, in my mind there is no way for that license to establish a contract between Vizio and a user. How can there be a meeting of minds when Vizio's mind disagrees with the contract.
They are clearly committing copyright infringement, but plenty of a copyright infringement happens in practice and it is tolerated by the copyright owners. This is not what I am objecting to though. I am objecting to the idea that Vizio has a contract with a user to give them the source code of their proprietary software. If Vizio ignore a license, in my mind there is no way for that license to establish a contract between Vizio and a user. How can there be a meeting of minds when Vizio's mind disagrees with the contract.