Scientists are actually busy doing science (and the bureaucracy that surrounds it), especially medical / epidemiological etc. scientists at this time of crisis – contrary to the impression given by conspiracy theory, they don’t just sit around for decades waiting for Mr Big to walk in one day and demand “create me a false pandemic”.
It would be entirely impractical for the scientific community to examine every claim on every blog and YouTube channel. The places that attract a lot of appropriate critical expert scrutiny are the appropriate scientific journals for each field, so those are the places to publish serious scientific claims.