^ article, I thought was used to see if we could perhaps draw inference to MBTI categories of T/F given the words used, 'rational' and 'emotion'.....as a simple interpretation of the OP's intent (I could be wrong).
Within MBTI or in general? In MBTI, it is entirely different. Emotion, as it would be clinically defined, is not represented in MBTI - or rather, a component of it is expressed in E/I. Nothing about F or T makes a person reactive or emotional (with the exception of decision of the decision making process - namely the degree of detachment... but correlation studies show no emotional reactivity correlation of note... so it is using a specific definition of feeling)
I don't actually remember F having anything to do with emotions.
so it's kind of a non-sequitur whether MBTI officially recognizes and uses the terminology 'emotion' to pertain to F.
Unless....you want to challenge the specific way emotion is being defined/inferred in the article and how it differs from F (which was your point

). Personally, I couldn't find a clean definition of what the article means by 'emotion' to comment
either way. Other than to take that the OP wants to infer, for this case, emotion to be F, and rational to be T.
All I could get from the article, in terms of how it defines emotion, is the clinical case study of the man with the brain damage 'that stopped him feeling emotions'.
There was just one problem: he could never make up his mind. He would just go on weighing the pros and cons.
See the point? Being able to evaluate coolly and carefully the choices we face is a valuable skill. But to motivate us to pick one option over another - to make us care about one more than the others - we need our emotions.
As the words suggest, motivation comes from emotion. And if motivation is a good thing emotion must be good, too.
Given the above, if we can't even figure out exactly what the article means by emotion, we cannot then comment whether it did or did not hit the mark. Unless...we take the article's inference at face value, and comment.
I disagree with the article, however. What is being described isn't "emotion", but motivation, making it (to me, anyway) circular reasoning. I have been run over by motivated 'emotionless' people, and have seen emotional people flounder. Having said that, emotions can definitely be classed as 'reactive', however I also think the 'reactive' parts do not represent motivation, least not long term drive.
See, here's where I think the article *is* trying to say that...emotion, because it's reactive, motivates one to action....
The only thing that really matters, to me, is that F doesn't get associated to the reactive definition of emotion (and that Ts are less reactive) as it isn't true. No matter how we define the words, that remains true.
Hence, I'd agree with the above, but, within the context of the article, it is such that emotion is the motivation to react. I'd prolly agree with your argument for why we cannot lump them together but it doesn't do much for the article as it sets up emotion to be very vaguely defined and inferred as motivation for action through the clinical case study. Given
only that premise, I agree with the article.
Where things get hairy...my main contention is: if emotion is a motivation for an action. And, as per the article:
Even so, emotions such as ambition and curiosity are the great motivators of achievement
Curiosity is an emotion. Then, a rational, must ALSO need a motivation to conclude, that of curiosity. Thus, a rational would still have emotion. Which doesn't do much for how they've set up the dichotomy. Or....bring up the question: what then is a rational's motivation to conclude? And, if there is no motivation, there will be no conclusion, and if there *is* motivation, it cannot be 'emotion'=motivation, if the article is aiming to point out a dichotomy.