I wouldn't treat a Vox article as evidence that something is true.
> Worth reading this tweet storm...
LOL.
As others have pointed out already [0] IAT hasn't faired well in the replication crisis.
Of course this doesn't necessarily mean that 'implicit bias' doesn't exist in any form. Absence of evidence is not evidence of absence. I'm just pointing out that saying "a real phenomenon backed up by good studies" in light of recent studies is kind of a stretch.
That said, this account doesn't seem to have any provable credentials associated with it and lacks even a first and last name...