Support for Trump, or even Republicans writ large, means support for reducing taxes (both estate and income) on the wealthy, while increasing them on consumers (via tariffs). Musk has been an ardent supporter of Trump.

While I don't disagree with your conclusion, this line of reasoning makes no sense in a two party state where each party offers a menu of positions. Supporters are forced to make tradeoffs and pretending otherwise just gives you an incoherent picture of reality.