It isn't a critical question. It's a red herring. GLCMs are very different from MRBMs or IRBMs. For a start, they're not ballistic missiles. They're slow, & much easier to shoot down. They're not first strike weapons, unlike ballistic missiles, because they take too long to reach their targets.
The strike length Mk 41 can fire Tomahawk (TLAM), but so what? Most of the infrastructure for the land-based missile defence system is useless for TLAM, & a single ship or SSN can carry more than the anti-missile system has in its launchers, while being much less vulnerable - the launchers Feanor mentions.
BTW, the USA no longer has any nuclear-tipped cruise missiles, & it scrapped a much more threatening system than one could turn a handful of fixed Mk 41 strike length VLs into. There used to be mobile GLCM launchers. I remember when some of them were based near here. If it wanted to deploy TLAMs in eastern Europe, it could probably re-create that system relatively quickly (much more to than a new IRBM), & it wouldn't have the vulnerability of fixed GLCM launchers.
Claims that the missile defence system is a cover for deploying land attack missiles are propaganda, pure & simple. It's a lousy basis for TLAM, & useless for ballistic missiles.