contradictory communication

So here's something else to ponder. While warm indicates loss of information in the higher frequencies, hot means bright. Why is that?

Transparency and neutrality to me are like describing Gwyneth Paltrow. She's got a cute face, but the rest of her is featureless. Sure you can see everything, but so what! Warmth to me is curvy and fiery like Sophia Loren. Gwyneth may have more detail in her skin, hair and eyelashes, but Sophia's curves and saucyness are the kind of detail I prefer. She may kick my ass and break my shifter off, but I'll enjoy dying in her warmth.

By the way, is this based on your experience or only what you've read.

I do not agree with the above. You do not have to have HF roll off to have a warm sounding piece of equipment. My idea of warm is more "Full bodied." Most of the time, that warmth is coming from the upper mids and not the high frequency driver.
A good example is compare an Ayre V5xe amp to a McCormack DNA 125. The Ayre is warmer but delivers a cleaner, smoother, more holographic picture. The Ayre is more tube like without any subtractions what so ever. The McCormack is leaner giving one the impression it is more transparent.
Maybe sonic richness is a better word.
At any rate, that roll off cannot be measured in the components frequency testing. It has to be in another area that is not defined.
Another example, the Vandersteen 3a Sigs have been said to be warm. However, they are flat out to over 22kHZ.
Therefore, it has to be another parameter that one is hearing.
Also, warm compared to what? Sure, if you have a lean sounding speaker, then another may sound warm in comparison. The question is, which do YOU deem correct?

Warmth is a product of the lower midrange to upper midrange/lower treble balance. If the latter is elevated compared to the former the sound will lack warmth. It's more likely for audiophile targeted products to suffer from this lack of warmth which can be mistaken for increased transparency.

I've never associated transparency will a balanced frequency response. That's more like neutrality. Transparency has more to do with low distortion and quick transient response.