> There is nothing special about a room temperature semi conductor, your CPU, RAM, and storage drives have worked at room temperature for decades…

This is a magnetic semiconductor (and antiferromagnetic). All non-experimental magnetic semiconductors require cryogenic temperatures. If this pans out (works, cheap-ish to produce), it could mean significantly faster memory, with significantly less energy usage and significantly less waste heat (and thus, even less energy usage).

Obviously it's very far from "panning out", but "room temperature" is not a given here. It's not normal, and it would be a huge deal.