Curious — almost like they do not want the sheep to be healthy

#1) - Australia has been draconian in their reaction to Covid
#2) - there is an established body of evidence that people with sufficient levels of Vitamin D do not have as bad an outcome from a Covid infection (sources: Mayo Clinic, UC Davis, WebMD and National Institutes of Health for starters)
#3) - this little gem from Australia's National Tribune:

Cutting down vitamin D tests could help lower carbon cost of healthcare
Unnecessary vitamin D testing in Australia is costing our healthcare system up to $87 million and is contributing to the sector’s significant but avoidable carbon footprint, say researchers.

A study examining the climate impact of low-value healthcare activity in Australia has found that unnecessary vitamin D tests generated carbon emissions equivalent to a car driving from Sydney to Perth 59 times.

The researchers say in 2020 unnecessary vitamin D tests in Australia cost the healthcare system over $87 million (AUD) and had a carbon footprint of 28,000 to 42,000 kilograms of carbon dioxide equivalent emissions (kg CO2e).

The carbon footprint from vitamin D tests was calculated from the embedded emissions in the blood collection equipment such as needles, syringes and glass tubes. They have to be manufactured, distributed and disposed of, all of which generates carbon emissions.

Reducing unnecessary vitamin D tests could help lower the carbon footprint of healthcare in the country.

They have zero reason to deny people a simple test for the level of Vitamin D in their bodies so they make up an excuse.

It's about Global Warming.  You have a question?  Shut up and sit down and take your jab.
It's for your own good you you you... peasant.