If anything, the Bombcast dispelled Arthur Gies' theory that the people who didn't like the ending were an acidic minority. They managed to make an argument (thanks mostly to Brad's unique experience with the game) that Bioware royally bungled the ending without sounding like entitled dicks.
But that's the thing, most people weren't sounding like entitled dicks, that was just a vocal minority that became seen as the voice of the complainers, and therefore it was never taking seriously except for by Bioware themselves. A lot of the criticism was measured and intelligent. That just never really got to be the story back then.
as someone who didn't like the ending but didn't really care one way or they other, they kind of sounded like huge entitled jerks.
Some people, sure. But like I said, there was plenty of more measured response. And it should also be seen in this context: Pretty much NONE of the critics had pointed out the flaws of the ending and the game has a 93 metacritic rating. A lot of people probably didn't feel that the critics were doing there jobs and were feeling frustrated.
The press dropped the ball on ME3 at least as badly as Bioware did.