I can easily falsify the accusation that, "people underestimate transformers and don't see that they are actually intelligent," by defeating the best open-source transformer-based word embedding (at the time) with a simple TF-DF based detector (this was back in September).
https://www.patdel.com/plagiarism-detector/
No, these things are not, "emergent," they are just rearranging numbers. You don't have to use a transformer or neural network at all to re-arrange numbers and create something that is even more, "artificially intelligent," than one that does use transformers it turns out!