It's fine and perfectly reasonable not to trust closed-source code, but no reason to spread half-truths about it.
"Hey, how should we deal with resetting people's passwords and keys when they forget them?"
"Tell them to get a safe deposit box"
"And when they're traveling or really need a report and the bank's closed?
"They shouldn't have lost their keys. Stupid lusers."
"Hey, who are you and how did you get in this meeting?"
"I'm the new intern. From the CIA."
"Oh, okay, yeah, let's do that."
It's fine and perfectly reasonable not to trust closed-source code, but no reason to spread half-truths about it.