In some areas I can see where the wives would be asked to take on the responsibilities of brothers. Besides some of the Elders and MS wives are really more able to handle some tasks. When I was a MS and Elder I would ask my wife to proof read anything that was to go on the assignment board, but that was all.
Now granted there were times that I prepared service-meeting parts during the TMS. And at times on Q &A parts, I found the answers while the paragraph was being read. And being Book Study conductor is a breeze the 2 nd or 3rd time through the book. But, I am a salesman and have learned to be rather quick on my feet. And giving talks at the KH is not the stuff where Rocket Scientists are required.
I stepped down almost 5-years ago. I marvel at times when Elders from the platform make statements about how deep the material is for a particular meeting. What would they do if they had to handle the books Freddie wrote in the 1950s and early 60s?
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Where I live the Elders are normally the best educated and have the best jobs. They drive the best cars and live in the better areas. So it is not the same everywhere. How else do the pay the simony? Now that is not the case in the Spainish Congregations in the area. But, even then they are rich compared to the others in their Congregation.