I see your concern here, yes they are typically harder to open and do take more concentration. I was in no way shape or form involved in the decision process to utilize them, but being a pediatric nurse, I am so happy and proud of the decision made to do so. I see many patients who over-dosed on their parents medications, herbs, pills, etc. because they were not child-proof.
This push down method IMO provides a great barrier to maintaining the safety and welfare of many supplement user's children who may potentially get inside the bottles and ingest the pills. For someone who doesn't have kids, this may be hard to fathom, but for those who do, understand how easy children get into things and how hard it is for them to comprehend the ability to open these sorts of bottles.