Argument of first world problems - WRONG!

[John V]

Subject (A) - This problem exists because of reasons x and y and needs to be solved
Subject (B) - There are children starving in Africa, why care about that? / Compared to problems in third world countries, REAL problems, that's just an insignificant FIRST WORLD PROBLEM, it's not even an issue

6 - People have the right to fight and solve any issue they want, with the priority they want, and you have no right to tell people how to feel about it since it's a personal choice - Since it's worse in Africa and you're worried, go fix it yourself, just don't use it as an excuse to not fix our problems

Seems to me that, by initiating the discussion and telling B that the problem needs to be solved, A is himself violating point 6, and B is just responding in kind.