I’m assuming that they understood that, because they said (I assume pejoratively) that they sounded like a “can’t be racist against white people” leftist. If they had failed to notice the sarcasm, they would be taking the sarcasm at face value and seeing a pro-male, “all lives matter” type take
Google search results are really bad, but it’s worth a moment to consider how good your search results would be if as much money rode on gaming you as rides on gaming Google.