And what exactly are you trying to say? That at one point they considered Dark Energy for a ending? Yes we know that. They also had Cerberus as just a throw away group but they evolved into something more because the Ascension book and took on a role critical to the plots of the games. The thing being discussed in regard to the Dark Energy theory isn't if it was every intended to be or thought up as a possible ending but if the theory would fit as the ending for mass effect given how the lore and stories of Mass Effect 1 and 2 evolved.
https://twitter.com/DrewKarpyshyn/st...82584155590656 "From what I hear, the basic concept of the original ending is there, though some details may have been tweaked"
https://twitter.com/DrewKarpyshyn/st...82864288960512 "Dark Energy was on the table at one point, but the original idea for the ending was all about Reapers and Mass Relays"