Why are they still bolting out new versions, despite v5 already having issues with proximity to the CPU (too high frequency), efficiency and heat dissipation issues to a point the mainboard itself needs fans/fins? Shouldn’t they add some kind of throtling to the protocol, because you don’t always need full speed and climate crysis and all?

At this point, a PCIe 7 mainboard would need to be photonic only to work at all. Or only on SOC designs, but that’s contrary to the usecase of PCIe.