Everyone's biased. If you don't think you're biased you just haven't identified the bias yet.

For example 'the center' You are already talking about a subset of (probably English speaking) programmers let alone the population at large. So that's a bias there. And you've chosen the centre, other people may not agree with where you've put the centre. I for example am accused of being right wing and left wing. Presumably the accusers didn't think I was in the centre.

Having said all this, I do agree with your points, I don't think you'll have much luck actually improving the level of conversation though.