You only ever hear the left talking about dog whistles because it is primarily people on the left who say things they don't actually mean. Socialists like to hide references to destructive & parasitic ideas in flowery language so that they will gain both the support of the uninformed & the support of those who already understand the references. But then they project that same sort of dishonesty & deception onto their opponents & claim that rightwing dog whistles are everywhere. Which as far as I can tell is largely untrue, but it persists because it helps them to innoculate their supporters against hearing anything that the opposition has to say.

There are people on the right with awareness that leftists have this paranoia about the language used and they will troll them by coming up with meaningless slogans specifically to elicit hysterical reactions. "It's okay to be white" & rumors about the OK hand symbol were consciously created to this end.

Some small subsection of people who identify themselves as "libertarians," the subset that is far too caught up in seeking approval from the rest of the political system, has tried to use halfway deceptive leftist tactics to trick some of the left into supporting libertarian ideas, but these are never the things attacked by the left. And the reality of the matter is that it really only works in one direction. The effort required to understand & apply the sort of ideas needed to solve problems is always greater than the effort required to create the problems, so you really can't trick people into supporting anything but destruction.

But everyone who believes a politician or political party is going to save them, no matter which side of the isle, is caught up in the same religious cult where the govt is their god or their imaginary paternal figure. It's not even all that unusual to hear people on either side refer to govt as a needed parent. It seems odd to me that grown ass adults would openly admit to such an infantile way of thinking.