Maybe in their enthusiasm they (both researchers and Uni PR) forgot that superconductors are not the first "perfect crystals" that comes to mind (nor is the perfection requirement so stringent)

The technique is the unsung star here: table-top 3d-printing crystals at what seems to be (mostly) ambient condition

(Also failed at the PR 10 years ago, so maybe they shouldn't be blamed?)

They won't be able to easily extend this tech to silicon/GAN. And I can't think of other "crystalline" materials that are porous only in the minds of insiders (ATM)

3d-printing molecular sieves/catalysts as a consolation prize?