Have you posted the wrong tweet ? I read the tweet you posted and they have clearly come out against the sanctions imposed on them by the US, they've said nothing about the current regime...
Have you a link or tweet where they come out in support of the regime ?
I'm afraid you've totally invented that I said they've come out in support of the regime, sorry to disappoint. I said they "have effectively come out in support of the regime".
I am surprised you can read that statement and think they haven't mentioned the current regime? The statement pretty clearly launders the image of the current regime, which I'd say is a pretty supportive act. Here's a few examples of what they've done for the current regime:
a) implying they have been legitimately voted in as the government under a transparent democratic system.
b) have praised the regime's medical care (something that has clearly irked Cuban's given the lack of investment in healthcare and public health has been a trigger point for the current wave of protests against the regime) - being gaslit by weirdo americans who've never even been to Cuba can't be much fun for Cuban's trying to protest and being violently beaten down by police and state actors.
c) have uncritically praised the regime's medic-washing image laundering technique of forcing doctors to travel around the world to wherever suits the regime politically, under the guard of their intelligence services (with their family under threat at home if they don't do as they're told) determined haven't.