https://www.thevintagenews.com/2015/10/26/us-analysts-heard-russian-astronaut-komarov-cursing-his-superiors-while-he-plunged-to-his-death-in-1967/
Family was in DC during this period. In High School heard rumors about multiple cosmonaut deaths.
I'd seen stuff with the other cosmonauts mentioning they knew all the problems but didn't want to refuse, or protest loudly. Because it was the Soviet system and that would undoubtedly be bad for whomever did so.
But I hadn't read anything specific about Komarov cursing his superiors on the way down once everyone realized he was a goner. Certainly not from the Soviet side, and nothing so specific as an NSA listening post hearing it all (although we all know they were listening to all the space missions they could).
Sad story. The guy literally sacrificed himself to save his other cosmonaut buddies. Obviously Gagarin wasn't the only one who was saved from the same fate when the following launches were cancelled.
That article links to a Daily Mail piece on the same subject. I have doubts as to whether the "open casket" photo portrayed there is actually part of Komarov's charred remains. That's just bizarre & makes me think somebody mislabeled it (intentionally??).