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Redgy exist because of his gold/silver sprite looked pretty badass back in the day. Now drawfags have been making him look like a dark pretty boy, and when you have the buzzword edgy roaming around, of course it's going to catch on.
I actually liked the Gold/Silver sprite for red, and the HG/SS one too. But people went over board with the "lone wolf, dark badass" Red look, it just falls into the edgy spectrum.
TL;DR: Gold/Silver/HG/SS Red was cool, but the fanbase made him too edgy... They had it coming.