All true.Anything with ASW assets will be spamming that poor Sub. Torpedoes ASROCS, and Depth Charges
Which is why the attack against a battlegroup won't be done with conventional warheads from conventional subs.
After all, the Russians do have those 100MT Poseidon nuke-reactor-powered super-torps with unlimited range. They stuck a full sized Tsar Bomba on it's own nuclear sub, and call them tsunami bombs.
Any fight where people are actually going after US battlegroups is a fight where nukes are very much on the table.