Not true at all. your link says no such thing. The Russians say so, but we do not give away our secrets and our detection methods.
I would expect her sinking the moment the balloon goes up. The USN Second Fleet was actually reestablished because of her.
No one wins a nuclear war. To think so is folly.
Pray for peace.
Since Russia's first Yasen-class nuclear-powered guided-missile submarine, Severodvinsk, entered service in late 2013, two decades after its construction began, other subs of the class have followed at quicker intervals, and Russian leaders are now considering adding even more of these subs to a fleet that has already impressed and worried NATO commanders with its ability to avoid detection and strike at valuable targets
https://www.businessinsider.com/russian-yasen-class-subs-land-attack-missiles-worry-nato-militaries-2022-7#:~:text=Since%20Russia%27s%20first%20Yasen-class%20nuclear-powered%20guided-missile%20submarine%2C%20Severodvinsk%2C,to%20avoid%20detection%20and%20strike%20at%20valuable%20targets.