Earlier quoted context omitted.
Yes they're local, but its not like there's a limit to how many local charities there can be in the world. Operating at a huge scale requires you to lump people together into groups and make assumptions about who they are and what they deserve, as you've done in your example. To me that sounds antithetical to the concept of charity. And even with the best intentions, if you mess up, you're messing up a huge scale.
I can't reasonably be expected to assess which local charities in Chad are even real. I don't think there are _any_, in fact.
It seems that our notion of charity has been warped in such a way that it somehow doesn't count unless it's some enormous large-scale mission carried about by Charity, Inc for the benefit of some group of people far away. It's all very abstract, and that just creates room for fraud or exploitation.
Paying off a local person's debts or putting their child through college will probably be far more impactful and meaningful than sending your money off to some giant organization.