Id really invite people to read the google blog post. https://research.google/blog/transformer-a-novel-neural-netw...
Google chose the word understanding.
Google chose the word understanding.
Just because Transformers work well on the "Natural language understanding" task in AI, doesn't mean that a Transformer actually "understands" language in the human sense.
And yet they waited until ChatGPT was a thing and threw Bard together overnight in response.