Yes, precisely. My reason for suggesting the embargo and intervention needs to go is the same reason I'm against interference in the elections in Western nations by foreign powers: it grossly undermines self-determination and becomes paternalistic bullshit, like they know what's best for others, when it's usually a ruse for personal political benefit and has nothing to do with the people of the region you're trying to influence.
The embargo was set up with the explicit purpose of trying to starve out the Castro government, which the US opposed because it wasn't their preferred dictator (they backed Fulgencio Batista, after all). That's a determinable fact. No getting around it.
So, if you're advocating against not lifting the embargo first before the government is toppled because of claims that a decades-long act of economic warfare is something that should be downplayed as less important than the actions by the government, congratulations, you're an American imperialist or in favour of American imperialism. Taking such a position means you're looking to ensure that the express purpose of the embargo has been fulfilled, an act of imperialism that has since been re-framed to justify its continuation, whether you consider the re-framing valid or not. That is not encouraging self-determination, because actions taken to achieve this result are still in play. You can consider them not the primary cause all you like, but it should not be there and leaving it in play while suggesting the government should go is fulfilling the dream of US politicians in the 1950s who put that embargo in play. Simple as that.
Again, the US has been involved in the situation since the 1950s, which has had a not-insignificant impact on the Cuban people for the nearly 7 decades since. You cannot treat them as separable because they've been made to be inseparable and there's been plenty of opportunities to separate the two in the past that never happened. If you're unhappy about that, I don't know what to tell you, but trying to "centre the conversation" to not discuss a key component of the conversation can be easily seen as "let's pretend this isn't a thing".