I know that is true for AC stuff, but is it for DC?

Also these are high end, $500+ video cards, is another $5 in material going to change much?

XT connectors are designed for two big conductors.

Most of these melty connectors are only carrying 2 rails, 12v+ and ground. There isn’t a need to have 12 connections do the same thing as 2.

Why can’t we just use more robust connectors (xt60 for example)? Or higher voltages? Trying to send low voltage, high current through a bunch of tiny connectors and hoping none of them melt seems silly. Is it just because no one wants to challenge the standard?