As far as I can tell that framing is probably for crowd appeal. The real breakthrough here is the availability of high-magnetic-field superconductors, which pus

As far as I can tell that framing is probably for crowd appeal. The real breakthrough here is the availability of high-magnetic-field superconductors, which push the size requirements for break-even down a lot and so put construction costs in reach of private investment. (This is why MIT is at the center of the work - they have a really good materials science program that's good at working with these finicky ReBCO tapes.)