Many Miami-Dade Cubans really seem truly deranged when it comes to how much they resent their home country.
My ancestors came from the Russian Empire, fleeing because of the pogroms, yet I cannot imagine devoting so much of my mental energy to obsessing over Russia in a manner equivalent to this.
Single-issue anti-old-country politics really does seem like a unique, characteristic feature of right-wing Latin American diaspora communities in the US. I've been trying to think of comparable examples elsewhere on and off for years and few if any have ever come to mind.
Reagan's tough talk against the Evil Empire did win him support among certain diaspora communities. The Vietnamese and Iranian diasporas are also sensitive to old-country issues. But, none of them are single-issue voters nearly to the extent of Cubans in Miami.