> A Brit who says "That is an interesting solution!" usually does not feel intellectually stimulated by the solution but is conveying that it is utter garbage.

I can be sarcastic but I have never directed sarcasm towards someone who I am reviewing. (Sarcasm towards third-party code is okay for me.)

I don't know if people who are using sarcasm would want to start labeling things like that as such, since it tends to detract from the intended effect.

Disclaimer: not a Brit.