I'd argue that certain games can work with uni students, but they must be strictly a novelty and used appropriately in relation to the lesson's topic.
They can't be of a childish nature though.

Precisely! I'm not sure why there is the assumption that it has to be all or nothing? Nobody has suggested you spend an each lesson, every lesson, playing games... Balance is the key word, one I have tried to highlight on numerous occasions. But to dismiss the use of them completely is showing your limitations as an educator.