The Bay of Pigs was in 1961. Castro seized power in 1959.The Cubans who fled Castro have already had children, grand children and great grandchildren etc since. And Cubans still support Trump. To suggest it's only the old Cubans who support Trump doesnt quite match the facts does it, given that there are vastly more children and grandchildren of Cubans who fled Castro than those who originally fled Castro. We are talking a time span of 60 years here. And Cubans overall are stollsolidly in Trump's corner because he delivered for them, whereas Obama/Biden didn't.
To suggest it’s only the old Cubans who support Trump
The first generation was stalwart, as were their children, after that it is much more mixed.