I think what made the parent comment "shallow" was because you didn't justify your claim with any supporting context. For example, claiming the APA has a track

I think what made the parent comment "shallow" was because you didn't justify your claim with any supporting context. For example, claiming the APA has a track record of misleading claims (ideally with supporting evidence) would have added some depth to your comment. Or perhaps you feel that all academic communication is biased by misaligned incentives, who knows? The reader can't extrapolate any further discussion topics from the initial comment, and as such it does not effectively promote discussion.