I think by including those, the author is saying that we tend to think that what is best for us (this tool is great/awful for my work) is also best for everyone else. It might also be a case of 'I understand this tool better/worse than others so if it's adopted I'll become more/less important' but that's a little more of a conscious thought process than what I think the article is pointing towards.

I also think the whole thing is written in a deliberately accusatory tone to provoke discussion among the target audience - rather than say that 'the ego wants to be at the center' the author could just as well have said 'our model of what other people know skews to be too similar to what we ourselves know'.