Totally agree there, the article makes complete confusion between the execution model and the tech used to execute. Especially since it says « not CGI as the protocol but as the model ».
As far as model goes, the serverless one is not a different model. It is still a flavor of the CGI concept. But the underlying tech is different. And not that much. It is only serverless for you as a customer. Technically speaking, it runs on servers in micro-VMs.
Those are orthogonal matters, and even if such tech as the middleware mentioned get some wind, the execution model is still the same and is not new.
People do not generally want to build software to impress at parties, that is a very weird flex, even if you are trolling.