Earlier quoted context omitted.
steroids are dangerous, but did I miss an article somewhere where jelqing gave someone HIV? It might be useless, but I wouldn't tell someone with a useless habit that it's dangerous.
Because the outcomes are disproportionate (aids vs non-aids) doesn't abdicate things from being stupid or not stupid.
Stupidity is everywhere. Saying some things are moderately stupid in x thing, so face-palming about egregious stupidity in y thing is an overreaction is essentially dismissive of valid concerns.