While this has absolutely nothing to do with audiophile bullshit, bit corner sharpness is a thing (it's not called that though) in high-speed digital signalling

While this has absolutely nothing to do with audiophile bullshit, bit corner sharpness is a thing (it's not called that though) in high-speed digital signalling. Basically, each conductor pair has a certain degree of capacitance so making a transition from high to low or vice versa is not a discrete, instantaneous event but takes time. If your signal is changing rapidly enough that this transition time is in the same order of magnitude as the length of each bit, you get blurry bits, and unreadable signal. And in this case, better conductor layout, with less capacitance, does give you sharper bit corners! So yes, fact.