The remaining ETA members in Cuba and their relation to the government were the one of the last things cited in recent (2010-ish) US terrorism reports on Cuba, along with incomplete evidence of having completely cut ties with FARC, but rather more substantial support to international armed revolutionary groups that the US described as terrorist (including ETA, FARC in Colombia, various groups opposed to US-friendly central American governments, and others) was why it was put on the list in 1982.

(I won't argue against the position that the US was doing much the same thing on the other side of the same geopolitical conflict so that the "terrorist" label was always somewhat misrepresenting the purpose of the list -- and not just Cuba's inclusion on it -- or that the initial premise of the inclusion had long ceased to be relevant. I won't even argue against the position that some of the groups Cuba backed that justified its inclusion on the list were no worse -- and perhaps even less terroristic -- all things considered, than the often US-backed entities they opposed.)