Refuse as written was something people asked for. "I want to defy the Catalyst even if it means extinction." A conventional victory makes no narrative sense and would be the equivalent of not needing the Star Maps to find the Star Forge. Refuse is a perfectly fine ending in the vein of Spartacus.
Some asked for that. But some (I would argue "more" but I'm not going to pretend to have solid numbers. It's purely anecdotal) wanted a chance to defeat the Reapers purely based on Galactic Readiness "Conventional victory" I guess some would call it. To succeed or fail based on how you did in the game, rather than a color coded ending gifted by the Catalyst at the very end. Given some Shepards managed to unite all the races (something no previous cycle had managed) and had absolutely mind-boggling amounts of War Assets.
Also, some wanted to argue with the Catalyst, point out flaws in its logic. We got to as k a few question but only get vague, hand-wavy answers that raised as many questions as answered
Heck some just wanted the chance to negotiate, to talk to others who will be affected by this choice (doesn't some early concept art show the Reapers not fighting, but surrounding the Crucible, waiting for what happens next?).
I therefore point out that the only concession Refuse makes is to simply create a new failure option that was asked for by a comparatively small group of ending-haters. That option, it turns out, amounts to the Catalyst (as a surrogate for Bioware) flipping the table because Shepard called on its BS. Made more obvious by the fact that shooting the Catalyst automatically triggers this ending.