I was also an elder and no, the description in the OP definitely does not match me. I am definitely smart, not just in my own perception, but also according to people in and outside of JW-Land. I always wanted to do the right thing, just like wasanelderonce did. Most of my life I've definitely had good jobs and worked in three different continents and actually lost track of how many countries, to be honest.
As an elder, a lot of the stuff was done sincerely believing on one level that it was the 'right thing to do', even though it did not compute, felt weird and wasn't loving. We were ALL brainwashed and, as we know, intelligence or the lack thereof has nothing to do with it.
By the same token, it can be compared with the shunning 99% of all JWs display. It might go against their "natural love" as humans, but because they've been mind controlled, they still do it, for if they don't, they might be destroyed in Armageddon. This behavior seen by an outsider, simply cannot be understood and it's consider almost inhuman and yet, we all ex-jws, at some point, were guilty of it.
What I mean is that, like in every big group of people, you can find anything among elders as you can find anything among any other population group, but generalizing is definitely not warranted.