It's kinda funny to claim that something isn't real, because some studies done weren't valid, but then not provide evidence to the contrary.

Being unable to replicate studies showing that something is real doesn't mean that thing is not real, it just means we don't know.

This is of course just my experience, but I know that I've had unconscious biases that I've later managed to surface and suss out (and hopefully eradicate). So maybe unconscious bias isn't as common as these studies you don't like seem to suggest, but it certainly is real, as I've experienced it myself.