Yeah, yeah, yeah. Ping me when it happens.
"if this fuel is exposed to air, instead of venting explosively as steam, it acts like lava and solidifies into rock"
Mass-produced floating nuclear reactors use super-safe molten salt fuel
https://newatlas.com/energy/seaborg-floating-nuclear-reactor-barge/
"super-safe molten salt"
It's going to happen 7 years and three months before consumer fusion plants come online.
"solidifies into rock" - sounds stable and just about ready for launch.