But getting back on topic, the article was probably right--the primary goal of the Soviet Navy was to protect its ballistic missile submarines in the Barents Sea and the Sea of Okhotsk, since Soviet war policy was to keep ballistic submarines as close to Russian land regions as possible.
And part of why the interstate highway system was considered of strategic importance. In emergencies large stretches could be converted to runways.
I think in the end, Soviet war policy likely relied on it going nuclear fairly early.
Why the difference?
Russia planned on a first strike. With their missile silos emptied out at launch, there was nothing left that need protecting from a counter-strike.
The US put ABMs around missile sites to allow us to ride out a first strike and have something left to respond with.
Russia’s claim to never strike first with nukes was belied by the ABM Treaty choice they made.