>>713635981The Gamecube came out at the peak of trying to make games seem cooler and more mature. The PS2 and XBox looked like high-end CD players with a futuristic aesthetic and jet-black color scheme in an attempt to seem more sophisticated. The Gamecube meanwhile looks like a Fisher-Price toy, and in the end that's part of what got it stuck with the kiddie console stigma (despite technically having stronger graphical specs than the PS2).
It was, legitimately, shallow "it looks like a toy" bullshit. That's all there is to it.