Well, as a member of group B, I have to say that the similarities between BSG and Homeworld are quite striking (since HW was more than a little based on BSG), and furthermore that Blue Planet displays clear similarities to Homeworld (and, by extension, Galactica.) The presence of a massive warship carrying the last survivors of a doomed race on a journey home is a fairly specific kind of storytelling. When that warship is the central element (the MacGuffin, if you will) of the plot, that's a definite similarity.
The references are not vague, they are specific, right down to the dialogue upon the return to Earth. There's no way I can see to reference 10 or more stories, but two certainly spring immediately to mind: Homeworld and BSG.
But I doubt you're going to agree, and as long as you agree that those who feel differently from you are intelligent and may have some valid points, I feel no need to argue further.
EDIT: Decided to add some textual reference in terms of the nods. Comparing HW M03, Return to Kharak, to BP01-2, ...With Vast Seas, you can see the dialogue nods right there, although they alone aren't very compelling. However, the sequence of narrative precedes as thus in both:
The ruined homeworld is discovered.
A ship that contains the narrative of the world's destruction is recovered as remnants of the enemy attack force are engaged.
The recording of the world's destruction is presented.
The narrative structures are the same. Now, Akalabeth, I'm not sure if you think this means someone is accusing BP of plagiarism. Narrative structures evolve in parallel all the time. Even if it is a reference, however, I'd say it adds to BP's value, rather than detracting from it; it's an excellent pedigree and a beautiful way to lay out the story.