Yes, that surprised me too. Are there any fusion designs without high vacuum?
But on the other hand, magnetic stresses in full-scale systems would be huge, right? And one could consider that to be pressure. In that it reflects confinement of the plasma. Or it could be an incoherent edit.
Several years ago I got a tour of MIT's Alcator C-Mod, which had the strongest magnetic fields of any tokamak in the world. A grad student showed us a metal tie, about a meter long and several inches thick. He said they'd calculated that two of them could hold down the Space Shuttle when it was trying to launch.
Holding the C-Mod together at full power required 38 of them.
