I believe he's saying it's worth zero because if you can get reinfected, then there is no herd immunity (other than for maybe a few months at a time).
Despite what you believe, that's not what the article says. It is rather what
@mgarfin explained, that based on objective scientific approaches, the data cannot be relied upon.
Well, as
@mgarfin pointed out, while it doesn't fit the standards, it might still be worth investigating. Though that might be futile, as this virus just keeps on proving that no one understands anything.