The plot is basically:
spoiler
Lab leak virus used by Russian scientist and evil Egyptian man (I guess) to do white genocide (literally, but it's only mentioned in a couple second graphic and one sentence from the Russian) from Soviet communist bunker. Thwarted by James Bond and British government violating international law, also saving Bond's girlfriend and blue-eyed (this is mentioned a bunch) blonde haired aryan daughter.
Yeah not sure what the deal with the Cuba stuff is. But it's far less offensive than it easily could have been. They didn't even hurt the cops that show up at the end of the scene.