If you were 4 and now you are 44 then you might be an integer variable. If sister is also a variable, we don’t know when she was allocated. She might also be an integer constant in which case she’s arguably immortal.

If your parents had another daughter in the meantime (or if your older brother became female), “my sister” would still be a valid reference, to a completely different person.

I think it’s more that he got a bit too excited about the way the far right can get away with absolutely anything. The media will make excuses for you, the fan base will love it, the more outrageous it is the more it makes libs cry. The democrats will impotently voice objections, the Overton window will move as required, and you will have gotten away with it. I think he wanted to be the star of that whole circus.