Maybe it’s time to move on from 12v being the “high power” standard in PCs to something higher. Similar to how cars are slowly shifting away from 12v accessories. 48v would cut the current on the wires and connectors significantly.

TBF, if you ask for power delivery in an unsafe manner, the PSU should say ‘no’…

GPUs shouldn’t be requesting power unsafely, that’s definitely something they should address as well; but the PSU shouldn’t be able/willing to comply either.