They take issue with the IEER report judging thorium as a fuel when they are mostly talking about it in a solid fuel reactor. I can't think of any thorium proponents who are proposing solid fuel thorium reactors. The excitement they have over thorium is almost entirely over its use in the LFTR reactor design (which is not without its own design problems but those are distinct from a solid fuel thorium reactor).
http://energyfromthorium.com/ieer-rebuttal/
They take issue with the IEER report judging thorium as a fuel when they are mostly talking about it in a solid fuel reactor. I can't think of any thorium proponents who are proposing solid fuel thorium reactors. The excitement they have over thorium is almost entirely over its use in the LFTR reactor design (which is not without its own design problems but those are distinct from a solid fuel thorium reactor).