He is pointing out that there is a difference between sending people to space for political reasons and sending people to space for political reasons in known to be unsafe aircraft knowing that the possibility of death is significantly above average. One is risking someone’s life for achievement and glory. The other is killing someone because your fragile ego can’t take the hit of not being ready on time for some stupid political deadline.
Yea, the point is why is there a random political shot at Pence? It makes no sense. It’s shoehorning a totally petty and not relevant potshot. Every space mission has been “political”, and of course everyone agrees you shouldn’t do a bad job at it.