At what point is there enough evidence to convince some people that there IS a problem, and believe those of us who have experienced this exact phenomenon?
The existence of a problem is virtually undisputed, it's the nature of it that is debated. In addition, the existence of a problem does not justify misrepresenting it, even if the intention is to raise awareness.
The question is the problem vs a problem. This research uncovers a problem, it does not explicitly state what the problem is. What problem this research found is what people are questioning.
Most of the comments (all of them that I've seen) say that the effect is real, but the source isn't necessarily a bias in the reviews, because of how the study was conducted (eg, there could be a hiring bias).
Bringing up a different cause to explain an effect is not dismissing the effect as existing in the data, merely calling in to question the source of it.
The existence of a problem is virtually undisputed, it's the nature of it that is debated. In addition, the existence of a problem does not justify misrepresenting it, even if the intention is to raise awareness.