"It's not possible to run an economy based solely on them, yes. "
And it's a bloody expensive distraction from investing in the technologies which can.
If all the money invested in solar/wind R&D went into LFTR, we'd have working commercial examples by now. As it is, if/when LFTR rolls out, those windmills and PVs will be expensive nuisances (unlike conventional nukes LFTR can load follow, but it's a _lot_ cheaper per Wh than conventional nukes, let alone solar or wind, as the cleanup costs are far lower than conventional nukes)
Biting the hand that feeds IT
