Chess.com computer is blind

Mixed view of what's being said here. Firstly the chess.com computer is making incorrect judgements in the end game in particular. However a mistake is a mistake however far ahead one is. Chess is after all efficiency of movement and logic. If there is a mate in 2 but you play a mate in 3, both ultimately a win it's still deemed inneficient.

I fully disagree that chess is about efficiency at all. It is about winning.  If there is an easier, less complicated win that takes more moves I would take that everytime over cutting out a couple of moves but leaving in the chance that if I miscalculate at all my position could go from far ahead to even or being worse off.

I personally don't care how efficient my game is, I care about if I win. When I have a game analized I don't care about the fact that I could have gone down a slightly more but highly complicated line that would have resulted in the same win. I want to know where I screwed up and gave my opponent chances to get back in the game or where I lost the lead and how to avoid that in the future.

You misundertsand me, I am merely taking from perspective of a computer the position of cold hard analysis, a computer cares not if it wins or loses. So I am actually in agreement with you. I like to look for 3 fold repetitions when I am losing or stalemates or playing to draw if my position is looking bad or down in too much material. Computers will continue to lose I should imagine if the position is lost.

Not when it's consensual.

I was referring to having two different mate in 2 scenarios, where the computer favors one over the other, due to it's calculation of the move strength of one line compared to the other. It will distinguish between moves with a strength calculation, because that is what it is programmed to do. What I am saying is, similar to the advice of a chess coach, who will say to his student, either way is just as good to win. The engine's program should be able to distinguish this too and credit your moves choices accordingly, not as mistakes, but winning moves, just as credible as the one it calculated as the strongest, because of it's results.

Yes I've complained to chess.com about the 2500 computer, it is making odd judgements in some of my games, declaring blunders and offering worse lines instead, especially after 30 moves or so.

today the computer questioned my choice of playing the sicilian. it suggested 1...e6 as a better alternative to 1...c5. 

Yeah, it always does that.