They were no need to play the antisemite card. Nothing in the original comment suggests it.
The point of dog whistles is that most people can't hear them.
"Globalists" is a dog whistle. But sometimes people do also literally mean "people in favor of globalism".
Few people use “globalist” in the 1940s sense these days, but it is widespread among far-right conspiracy theorists, many of whom use it to refer to Jews while leaving room to claim they weren’t - similar to how often Soros is mentioned in contexts he has no other connection to. That doesn’t mean that anyone who uses it is definitely engaged in anti-semitism but it forces the reader to have to question whether it’s being used for multiple reasons.