There's more than a Chance this warning was unwarranted

But that’s a little disingenous when what you actually said was:

[my bold]

Nobody (statistician or otherwise) would interpret this invective as nothing more than making a scientific point about the significance of Dr Deth’s data. With that preamble, saying “you are statistically insignificant” reads to me like a deliberate play on words between the term of art and the everyday meaning of insignificance.