What a fuss there was back then! They wanted to hush it all up back in 2000. There were rumors that someone was tapping with a spoon (can you imagine, it could be heard through the walls of the nuclear submarine!), and then they said that there were survivors, but later they said that almost all the crew members died almost instantly, and all the talk about survivors was just nonsense. They made a mess back then, maybe they don't want to bring it up now.
I'll be back from vacation, and I'll definitely quote the entire film in the French interpretation.
I don't know why they decided to forget about the "Kursk," but not about what you listed...
I think it will become clear soon.
I agree with Князь_OMEGA, if we are going to commemorate every tragedy every year...
Tragedies are not commemorated; tragedies are loss, grief, and remembrance of loved ones!
Sincerely, VDV_forever