They did not, no. It may be helpful for others to contact them with the same concerns.

Unfortunately I do not.
Educated guesses could be made, but only the original contributors could be certain.
I've reached out to https://deflock.me to request they update the guide for submitting new ALPRs. The guide should clearly note that the "operator" tag(s) should be correctly populated if submitted to OSM.

I failed to update the wikidata info when copying it from https://deflock.me. The correct Police Dept name and wikidata ID have been added. Thanks!