Not really - China doesn't care about other nuisance issues.
Look at how the TikTok kids (who went nuts for the Palestinians) don't give a crud about the Cubans.
At least many are aware of the viciousness shown by the current US administration against Cuban population.
At the same time, full blown humanitarian disasters, like the one that hit the Rohingya in Myanmar, people that were being thrown in pit and burned alive in the thousands, are completely unknown to the average adult in the west.
Empathy is not a Chinese psyop.
Anyway, here's actual evidence of elected officials contradicting your anecdotal narrative:
https://apnews.com/article/cuba-embargo-congress-pocan-leger...
Well, the Cubans ain't being bombed by their neighbors.