I am also questioning this claim and given there is zero evidence for that, I can also only conclude that it is completely unfounded and baseless.
That's is the problem with some of the crypto-critics and the crypto-maximalists as they are just as bad as each other attempting to demonize, categorize and outrage one another with such absolutist rhetoric with zero evidence.
Citation needed.
(This is actually me being charitable; it's not remotely "unquestionable", and in my view it's not even supported by the evidence available.)