I would venture to say that what you focus on in your comment runs explicitly counter to what the GP was trying to emphasize in their post. For the people who teach kids of grades 3-5/ages 8-10, I doubt that they are in the business of dissuading children who are apparently "not intelligent" by whatever metric you imply. Kids at that age deserve every open door that can be given to them, and implicitly shutting them out of a computer science club because they can't immediately grok how to do the described task is doing the entire community a disservice. The lesson to be learned isn't that some kids can't (or won't ever) cut it, it's that the learned elders need to formulate better ways of passing along programming knowledge to the younger generation.