If you read the article, it seems to actually be paramedics administering the medications in every case mentioned. The cops are still being shitty by using dangerous restraint holds on people, along with often encouraging EMTs to give sedatives in cases where the only justification is the convenience of the cops, but I didn't see them mention any cases of cops actually being the ones sedating people in it.

Cops aren't the ones drugging the people. The paramedics are. They then get taken to the hospital most of the time.