Yeah, they’re referring to the old idiom ‘actions speak louder than words’.

What actions? This is done most commonly toward strangers they don't know at all.

If someone were to say, for example, "I'm okay with the government picking up the slack to keep a kid from starving, but it shouldn't be treated like a solution. Instead, it should be seen as a temporary necessary measure while resources are put into solving the real problem, by preventing children from being in a position where their own parents aren't capable of feeding them to begin with, since they're the ones who should be doing it", the people I'm talking about would happily contort it into "they want kids to starve", because that requires no thought/effort, and you get to look morally superior to boot, since now that guy's just evil, because what a horrible thing it is to want children to starve!

Fact is, almost nobody is willing to even take the majority of people at their word, much less actually steelman an argument, which is how you really end up with rock solid positions and arguments, instead of having to rely on stupid rhetorical and semantic maneuvers.