Angola was a colonial possession back when Portugal was a dictatorship. Obviously, the people that were in power back then were not very nice. Once the old regime was overthrown, one of the first things that was done was ending the colonial wars. Still, I'm not sure how this is relevant right now?

The point here is that the Portuguese government (the current one, not the one in power during the dictatorship which ended over 40 years ago, and which you seem to be confused about) has done a good thing, and for that they deserve praise.