It seems apparent to me from the context that Joseph was referring to entering a non-kosher restaurant, not using a portable grill to prepare kosher meat. So unless you were grilling some meat on your portable grill and then bringing it into a non-kosher restaurant to eat, I don’t think he was referring to you.
I know he wasn’t. Just kidding around a bit. ‘Tis called “humor” (although, I’ll admit, my humor is strange, unpredictable and rarely in good taste).
The Wolf