It doesn't, at all. The committee says that's their job - to look at injuries, player adds/subtractions, determine added emphasis on critical games throughout the year, rate the quality of performances versus just outcomes, etc. - they basically make sure there are enough things left out of the numbers to justify their own eye test judgments.
Most pro-NET folks paint everyone that hates it as dinosaurs who don't believe in analytics. And sure, those people are out there, but there's a far more reasonable contingent that simply recognizes that the NET is both flawed as a metric and made worse by the quad system - even if it's better than what came before it. Forbes is one of those types - he is a HUGE analytics guy but hates the NET and the weight it carries. What's funny is the NCAA loves to tout how they worked with Google to develop the NET - Google analytics folks I know cringe every time it's mentioned. It's basically designed to ignore injuries, improvement, walk-on participation, garbage time points, back-door covers, end-game foul scenarios, piling on in blowouts, and cross-conference adjustments. Vegas metrics look at efficiency but factor in minute percentages played by who is on the court, so dropping 10 points in 90 seconds against scrubs has no weight. When teams show obvious improvement through injury/performance whatever they're factored in. They know the difference between the 10th and 50th team may not be identical to the difference between the 70th and 110th team. Forbes calls it dumb because it is designed to be dumb.
I'd never argue there's a "perfect" metric out there, or that the NET isn't far better than the RPI or old-guy eye tests alone. But the embracing of the NET to the degree we're seeing now is not, even remotely, justified by the moderate improvement it's provided. And "just be so good it's not a factor" is an equally horrible defense, as is "oh well the committee will adjust for stuff the NET leaves out once the season is over" because they are absolutely not digging deep enough into the entire season of adjustments that would be needed to account for that.