P.S. I am not sure you either read, or understood my comments about differentiation, or the blended classroom.

You don't understand why the good students need so much attention.
What I am saying is the good students don't get attention. And they are often the ones who could return that attention in manifold ways. Other students will just not do that to anywhere near the same level. Some of these disadvantaged smart kids could really make a difference to their communities and DESERVE every opportunity. Others will just squander the opportunity. You talk about the world class football players who started rough, but even the coaches could see potential. But for every Ronaldo there are a million or more wannabes who could never be. Imagine if Ronaldo was never given the encouragement or coaching, because the coach was spending all of the time on the weakest players.
If we could divide our time and effort equally amongst all the students, that would be at least egalitarian, but if we allow the no child left behind philosophy to rule, then all we are doing is nurturing the weakest at the expense of all, and limiting the potential of those who could be excellent, and thereby denying excellence to some students.
Some students, like Twain, will not let there schooling get in the way of their education. But for others, well meaning thinkers, will.

They all seem to turn up at Yunda. Probably hoping to improve their education and ultimately their prospects in the worlds fastest growing economy. ;-)

I work in a school that delivers a full curriculum, to larger than ideal class sizes (a normal pattern for most schools in the world). Each teacher gets the students, for class time, for just a few hours a week. In the hours that we do have we barely have time to deliver the basic content. There are lots of extension activities we would love to do with the students who get ahead because they are more able. Sometimes classroom management then becomes a higher priority, because dealing with students of mixed levels in a class of 20 or more requires more attention (to the group). However, we don't have time to nurture every individual student. Time is a resource you cannot buy more of. This is a big part of the frustration. There are also meetings to go to, and developing lesson plans for the differentiated group of students in a blended classroom setting. Then there is admin, and meetings. Some of us get to go for lunch, and have a family on the side as well. This is the reality for many school teachers around the world.

If we had small classes, in a tutoring type environment, we would have time to coach and encourage individual students. But there are few such ideal opportunities in larger schools, although it might be possible in smaller establishments.

Fixit, if you have carved yourself a niche and a personal style, good for you. However, not all teachers who don't do that are bad teachers. Additionally, some people would consider adults in positions of authority, building personal relationships with young people, inappropriate. In your case I am sure it is innocent, but missionaries use if for their own purposes, and other people use it for grooming. Some schools even have a policy against teachers forming personal relationships with students, that goes so far as meeting off campus.