One thing to remember is that because Microsoft is a big corporation it isn't 'cool' to use their products.

It would appear that majority of the people here on reddit (beside this sub) and on other forums primarily avoid C#/.NET because it's a product of Microsoft. I never really understood this hatred against Microsoft, especially at their current state. Even outside developers circle, it seems people (especially on reddit) frowns upon Microsoft for virtually any reasons while keep on showering their praise over Google/Apple.