Vinty's article say "the first in the world" meaning nobody else supports the claim
It also says it has not been peer-reviewed meaning it is not fit to be published in an authoritative journal.
It may or may not be confirmed, and is described as "promising"
It's great, and unsurprising, news that a previously-infected survivor has some level of resistance for some period. This however does not mean that it will be beneficial to allow the disease to rampage through the population, with hundreds of thousands of victims at any one time.
The article says "Other research has shown that antibody levels often decline quickly after Covid-19 patients have recovered" and "In contrast, antibody levels in some people had dwindled to undetectable levels within six months." Perhaps those are the parts vinty wanted to draw to our attention.
It's sweet to see Vinty has been able to find one newspaper article with some, but not all, of the content that he likes.
Vinty incorrectly believes that immunity resistance can be only 100% or 0%
He uses the word "level" but does not know what it means.
He avoids consideration of "new variants" of disease.