I wouldn't be so sure about the first part. -demonstrative is more "bossy" in conventional meaning, explicit about it, often lack controls over it (unconscious function). It's like they do it compulsively and in small matters, where
-egos are more about getting what they want. They order people around in different ways, or rather, are determined to go after their target and consciously apply pressure (not saying always successfully, but they tend to be good at it).
The other part I disagree with completely. The "connecting the dots" part of explanations is very
thing, as others mentioned before. It's frustrating to
ego to have overly explicit and repetitive - as described in the post you quote - explanations forced on them. Look at
-PoLR description - it's very accurate on this point, unfortunately. One of the roots of my conflict with ESE.
I can't be entirely sure this person is ESE or LSE, never having met them, and I see how LSI or ESI would be an option, but I still think it's rather unlikely.