To help others.

On Quayle:

Press coverage of the convention was dominated by questions about “the three Quayle problems”.[23] The questions involved his military service, a golf holiday in Florida where he and several other politicians shared a house with lobbyist Paula Parkinson,[24][12] and whether he had enough experience to be vice president. Quayle seemed at times rattled and at other times uncertain or evasive as he responded to questions. https://en.m.wikipedia.org/wiki/Dan_Quayle

And then:

John McCain probably lost whatever chance he had to become president on August 28, the day he invited Sarah Palin to be his running mate. https://origins.osu.edu/history-news/why-sarah-palin-gamble-didn-t-pay

Thus, the burn.

Edit: JD Vance probably had to look this up, too.