the only reason it doesn't is because of the large influx of migrant workers, some of which unvaccinated.
The number of deaths in Gibraltar are nonexistant.

Claim: Most vaccinated nation on earth also has ‘highest amounts of Covid cases in the world’ Guardian newspaper.
>At one point, Palmer pointed to the tiny nation of Gibraltar to argue his case against vaccination.
>“If you go to Gibraltar, for example, the most vaccinated country in the world with 118% vaccination … they have the highest amounts of Covid cases in the world at the moment per capita of persons [sic].”

Leaving aside the problems with using Gibraltar, which has a population of 33,691, as an indicator of any sort, it will shock you to learn that what Palmer says is not true. Gibraltar does not have the highest number of Covid cases per capita, either in a cumulative sense or in terms of new cases.
But the crucial measure when talking about vaccination is, of course, the number of deaths.
On that measure, Gibraltar is performing well.

Despite an ongoing outbreak, it has recorded just four deaths since March, when it hit its 80% full vaccination rate. Two people are currently in hospital.
The vast majority of its 98 deaths from Covid occurred in January and early February, when its vaccination rates were still low.