Are you aware the US invaded Cuba in 1961 in an effort to depose him?
Any socialist or social democratic government in a small country remotely within the US’s sphere of influence (and they didn’t even have to be within their sphere of influence or be a small country - look at Iran, Chile, Afghanistan or Vietnam) had one option if they wanted to stay in power, and that was to align themselves with the Soviets.
Given the US tried to overthrow Castro, what would you do?
Aligning with the Soviets was basic self-protection.
The alternative was inevitable overthrowal by a US backed coup, probable death and probable civil wars of the type that plagued Nicaragua and El Salvador.
You don’t get the difference between overthrowing a hated regime and overthrowing democracy, do you?
Pinochet was effectively forced to hold an election in the end i) by the country propping him up - the US who had finally decided to wash their hands of him and ii) because the popular campaign of resistance to him was too big.
There was never such a campaign in Cuba because the lot of the people was better.
You say Pinochet was an international disgrace but I don’t hear you saying the US was an international disgrace. Where’s that balance again?