Ann: Five Nines Graphite Purity Exceeded, page-67

Classic ad hom when you can't back up your argument.

Operational reactor types. Some 89.2% of the operational nuclear power capacity was comprised of light water moderated and cooled reactor types; 6.1% were heavy water moderated and cooled reactor types; 2.4% were light water cooled and graphite moderated reactor types, while the remaining 2.0% were gas cooled reactor types. Three reactors were liquid metal cooled fast reactors.

https://www.iaea.org/newscenter/news/iaea-releases-2019-data-on-nuclear-power-plants-operating-experience

In 2019, 1 in 40 nuclear power plants were graphite moderated.