The independent researcher who published a proof of concept before the release did not.

Just to clarify that no actual PoC was published, just a demonstration video was floating about.

And worth noting, Amazon’s MadPot started detecting exploit attempts four days before disclosure⁽¹⁾, so there were definitely other leaks long before “the video”.

⁽¹⁾ https://aws.amazon.com/blogs/security/amazon-threat-intellig...

Doesn't matter. They video signaled to attackers that it was discoverable so they all pointed their clankers at the PHP source to go and find it.