You overlooked that in favor of citing an emotional reaction. This is just like the scenario where I am explaining a case to an F and they dont hear any of it because they were too busy studying my body language, intonation and facial expressions. Their excuse is but Ts do it too! Yes, Ts do it to the extent that they rely on their Feeling function. As some in this thread have said Thinkers can be whimsical too. Yes, just less whimsical. There is a fine line between getting thrown off the rails by your emotions here and there and being completely ruled by them.
I think the most troubling aspects of the Feeler/Thinker divide are those people who are unbalanced too much in either direction. The feeler who doesn't apply logic and the thinker who fears/distrusts the shadow F side and yet is possessed by it again and again and unwittingly uses logic to justify its dictates.
So, the more F you are the more whimsical you are likely to be. One could say, but what about the shadow or tertiary F. Is not it also the case that the lower the function, the more difficult it is to control? Yes. But in most cases when it spins out of control, it is supressed by Thinking. When it does manifest externally, it is usually the case that the Thinker sees no problem with letting it show. Does not see any negative rational consequences behind this.
If anything supressing Feeling will retrench whimsical acts of cooperation and other banalities Feeling is responsible for.
Thinkers use logic unwittingly to justify its dictates? Yeah. The dictates of logic is doing what is rational. The bad news for the 'feeler' is that the sympathy card gets removed from the table. Without this, it is difficult to persuade the thinker to do the bidding of a feeler based on simply 'I want you to', or 'I feel like it'.
I see no problem at all with this.
Excessive on Thinking is not nearly as problematic as excessively reliance on Feeling because the former in the former case one is able to make sound decisions, in the latter one is not because they are governed by erratic winds of passion.