If it's about thinness, why not just go with 2.5mm? Maybe there's a more technical reason like VGA. I recall reading a primary reason to get rid of the VGA con

If it's about thinness, why not just go with 2.5mm? Maybe there's a more technical reason like VGA. I recall reading a primary reason to get rid of the VGA connector had to do with it being an analog signal and the extra electronics required to convert the digital to analog, while a digital connection like HDMI and DisplayPort was simpler.