Pointing out that those guys are all in India or thereabouts is indeed relevant — but it's not about race or ethnicity, it's about timezones.
If those three guys happen to be the most active of our members in that cluster of timezones, it is highly expected that they will, at least sometimes, reply to and approve/frontpage each other's nodes.
I mean, if I frontpaged a post by Limbic~Region and he frontpaged a post of mine, would it raise any eyebrows? I think not.
Between the mind which plans and the hands which build, there must be a mediator... and this mediator must be the heart.