Because it reinforces the TOTALLY FALSE premise that having recovered from the virus confers no immunity.
Similar to the calls to ‘vaccinate’ all children against a virus which poses them literally almost no threat whatsoever.
Laughably incompetent, egregious misinformation.
The rule of opposites applies to this stuff.
“Science” = witchcraft
If you don’t believe in witchcraft you are shunned—an unperson in the tribe.