I am certainly in no position to say whether or not they could work. Simply, that they haven’t paid off, in spite of a great deal of hype. Companies have poured huge amounts of $ investing in HAWTs (propeller-type windmills) rather than VAWTs, because they expect a payback. If thorium reactors were as superior as they are purported to be, I would think that by now, the same companies that invest in regular fission reactors would be heavily investing in the R&D to make thorium reactors widespread.
tl;dr, “Possible” is way different than “Practical”.
