He bases some of this on a "description of Pavlov’s last work in a popular paperback, written by some Rockefeller-financed psychiatrist". This is probably Battle for the Mind [1] by William Sargant [2].

The Wikipedia entry on Sargant says things like "his reliance on dogma rather than clinical evidence have confirmed his reputation as a controversial figure whose work is seldom cited in modern psychiatric texts.", and others "described him as 'autocratic, a danger, a disaster' and spoke about 'the damage he did'".

[1] https://www.amazon.com/Battle-Mind-Brainwashing-Evangelists-...

[2] https://en.wikipedia.org/wiki/William_Sargant

Thanks, now I don't feel bad about not reading this super long piece.