What is said by the President is seen and interpreted by the masses. The couple from Arizona are unlikely the only example of individuals doing "something stupid" because of things the President says.
Attempts should be made to accurately inform people and minimize the number of people that do "something stupid" IMHO. Doing stupid things can have multiple sources - being misinformed or partially informed is one of them. Scared people often do really stupid things.
Sadly misinforming people seems to happen on a regular basis with this administration. If this had been a one off incident during a crisis it would be more understandable. Sometimes Presidents make mistakes. Telling people "what do you have to lose" is for untested drugs IMO is not responsible behavior.
He says it in the press conference.
> The couple from Arizona would likely disagree if both were still alive - they heard what he said and acted in accordance with their interpretation.
They did something stupid, what's your point?