> I don't think people are cognizant enough of the legal consequences and ramifications as a result of a seemingly-innocuous comment like this; that doesn't just go for the person heeding the advice, there is also, in some cases, liability created for the person giving the advice.

I don't think people are cognizant of the ramifications of wearing denim suits, but I think it's ok that they do it. Seriously, (most) everyone here is an adult, and fully capable of making these decisions for themselves. It's up to you how you choose to participate, whether in this context or any other.