The anti-ship missile gap on modern destroyers

Is it a major oversight that Type 45 destroyers lack anti-ship missiles?

He thinks so, and would prefer a Tomahawk-capable fit that can cover both anti-ship and land-attack missions.

The absence of an anti-ship missile option is treated as a serious shortfall in the destroyer's offensive fit. A Tomahawk variant capable of both anti-ship and land-attack missions would be preferable to leaving the ship dependent on its gun against surface targets. The relevant variant was rare at the time, though it remained a viable option. A later aside attributes the wider missile gap to politicians seeking savings, connecting the weapons fit to procurement and defence-spending choices.