We all call it like we see it and sometimes toes get stepped on. That is what is great about the freedom of speech. If you though the comment was racist and want to call him a jackass is one thing, and it's okay, its your opinion and you are completely entitled to it. But to insinuate that they should not utter certain phrases, for fear of offending, is entirely different. That is trying to curtail free thought and free speech. Hence the suggestion of being PC.
I thought "taco bender" was kind of funny myself, having never heard that one before.
As far as people taking us seriously, if you have convictions firmly rooted in the Constitution, the majority of the people will not take you serious anyway.