There’s evidence of both “unscrupulous doctors start prescribing the antimalarial drug left and right” — although based on the reports I’ve seen it seems mostly for themselves and their families, rather than for anyone who asks — and of runs on fish tank additives containing chloroquine phosphate.

We’ll probably never know the full story of what the Arizona couple did and what they were thinking at the time. But we know people sometimes don’t read or don’t follow warning labels (as the run on chloroquine phosphate shows). If someone doesn’t read or doesn’t listen to a warning label, they’re responsible for the consequences. But that does not fully absolve the president of responsibility for touting drugs as a probably effective and definitely safe treatment for coronavirus before they’ve been proven to be either.