That is not what occurred in practice and there is no data to suggest this would ever be a probable outcome. At any rate people don’t have a choice on who responds if the call is to 911.
The data behind 911 Good Samaritan laws[1] that protect people from being arrested when they call in overdoses would like to have a word with you.
[1] https://www.shatterproof.org/advocacy/state-by-state-informa...
In any case, if you are giving anyone defibrillators and locating them to minimize response time to cardiac incidents, it would be absurd to give it to the police.