> what happens when, for example, a viable room temperature superconductor (remember LK-99 lol) gets discovered? Next thing you know we have 3d stacked chips operating at THz speeds with virtually zero heat output

Room temperature superconductors don’t enable THz chips with no heat output.

If superconductors broadly allowed this, we’d already have such chips available because we could super cool them and keep them at that temperature easily.