I really don’t disagree with what you are saying.
But, there are-were two different kinds of dispensationalists in America:
(1) the politically active Pat Robertson-Jerry Falwell- James Dobson wing,
and the
(2) John MacArthur - Chafer wing. Bear in mind the MacArthur - Chafer wing are not internally on the same page as far as Lordship Salvation, but also neither thought political action should be the main focus.
They both agreed the focus is the gospel of Jesus Christ, for people to be saved from eternal hell by receiving through faith God’s free gift of Jesus’s payment for our sin.