Except everyone who "has a hostile reaction to people who handle guns irresponsibly" has a story of a range or person they know who does exactly that, and their response is simply to stay away, instead of narcing on them and making the community safer at the expense of being a tattle tale.

So there are plenty of people who call themselves "responsible gun owners" but turn a complete blind eye to bad behavior.

Or they will keep a loaded gun in their bedroom for home defense, something that is outright NOT responsible gun owner behavior, yet is the primary cited reason people own guns in the US.