Can the dominant function be under developed compared to the aux?

I was reading the ENTJ descrption on Personality Page (Portrait of an ENTJ) and found the following statement interesting:

ENTJs are very forceful, decisive individuals. They make decisions quickly, and are quick to verbalize their opinions and decisions to the rest of the world. The ENTJ who has not developed their Intuition will make decisions too hastily, without understanding all of the issues and possible solutions. On the other hand, an ENTJ who has not developed their Thinking side will have difficulty applying logic to their insights, and will often make poor decisions. In that case, they may have brilliant ideas and insight into situations, but they may have little skill at determining how to act upon their understanding, or their actions may be inconsistent.

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What I found most interesting was the bolded part of the quote. It has always been my understanding that our dominant function was the one that came most naturally to us, thus I assumed that it would always be the strongest, always. However this statement seems to imply that it is possible, at least in some cases, for the dominant function to be under developed compared to the aux function.

Is it possible for an aux function to be (or seem) more developed than a dominant function?
Has anyone observed this in their experience with typology?
Is this just an ENTJ phenomenon? Or could this happen with other types as well?

Any insight, thoughts, opinions, etc are appreciated.