Those are examples of bad luck deaths. A dumb death would be something like Steve Jobs' demise. Here's a very wealthy guy who could have had any available treatment for his problem but ignored warning signs and then sought experimental treatments that delayed the proper procedures until it was too late for what he needed. We'll never know how much longer he could have survived had he pursued more conventional treatment earlier and that's a shame for us he played dumb in the biggest predictament anyone can face.
"When a man is tired of London, he is tired of life"...Samuel Johnson 1777
"When a man is tired of Federer, he is tired of tennis"...stringertom 2014