Honestly its rude to be invited by a country to meet their president who decided to respond to your criticisms of their administration only to not show up and go meet the opposition.
Being invided and then no showing shows complete disregard to basic diplomatic Etiquette since it was a mission to show solidarity against the embargo
Bonus socdems being cringe part 4.5: about another member that didnt show up to the presidential meeting
Deeply unserious people
This reminds me of a recent podcast on Rev Left where he interviewed three Pan-Africanists who were part of a delegation in Cuba: https://revolutionaryleftradio.libsyn.com/on-cuba-and-haiti-the-fight-for-liberation-self-determination-in-the-caribbean
One of them has been to these conferences in Cuba multiple times and would mention how US leftists would constantly bring ideological and sectarian baggage with them and how Cuban communists have to constantly tell them to remove their heads from their asses and stfu (It's around 13:00 into the podcast).