IE like Crypto AG:
In 2020, it was revealed that the Swiss company, Crypto AG, which provided secure communications services to ~120 governments throughout the 20th century, was secretly ran by the CIA and West German Intelligence. The CIA and later NSA were able to read encrypted communications for many countries such as Saudi Arabia, Iran, Italy, Indonesia, Iraq, Libya, Jordan and South Korea.
It is absolutely irrelevant who makes the criticism, what needs to be addressed is the criticism itself. If somebody gives you advice to simply trust people blindly then you should be very suspicious of their motivations.