It seems to have made things better for the Taliban.
Cuba is the easiest target the US could have. It's very close to the US and very far from any potential ally. The US has never shied away from committing acts of extreme cruelty, well into terrorist or war crime territory. From dropping nuclear bombs on civilians, phosphorus bombs, drone bombing innocent people, schools, hospitals, institutionalized torture, etc. even with far weaker reasons.
There is no scenario where a direct attack on the US wouldn't lead to an extremely violent response in complete disregard of Cuban lives. And get away with it.