Just finished it. I must say that because I liked the game itself a lot, I tended to think that the whole ending issue was exaggerated, but boy was I wrong lol
Aside from the actual nonsense, no real choice, boring, full of plotholes, pointless ending - I was really pissed that the ending sequence was cut off so abruptly.
I thought I was going to evade the Reaper laser, get on the Citadel, fight my way up for an hour, face a final boss like an indoctrinated Illusive Man or something, and then get to see the shitty ending.
It came up on me by surprise. There is no real final confrontation in the game. The battles on Earth are challenging but at no point did I think "this is it, the final battle". I was looking forward to fighting through a Reaper-infested Citadel and a final boss fight and BOOM, nothing.
Shepard is wounded, walks really slowly, and then some bullshit and GAME OVER.
I should have never doubted any of you, the ending really was terrible.
I still like the game though.