Every article older than a couple weeks talking about superconductors goes on and on about how useful they are, except for the logistics of keeping them cold

Example: https://en.m.wikipedia.org/wiki/Superconducting_magnetic_ene...

Superconductors suporting high current are incredibly useful, but that's a big caveat. There's a reason MRI scans still use the super tedious helium-cooling instead of a much simpler nitrogen cooking allowed by cuprates: the cuprates SC aren't good enough for MRI.