Your citation suggests that in this context, ignoring means "potentially offering them fewer page referrals from advertising slots, relying on them to generate organic traffic".
I mention this, because the interview with Tim Sweeney posted in response to your comment says: "Generally, we want to enable a more direct relationship between developers and gamers, and more efficient economics and discovery. Developers will control their product pages, free of advertising for competing games."
The reduced margin will definitely benefit all developers, but the Grey Alien guy recently tweeted that margin wasn't the problem because 30% of nothing is nothing, and his issue is no one discovering his games.
I would say who the Epic approach benefits is sort of "Big Indie" -- developers large enough to self-generate momentum but small enough not to benefit from the improved revenue split. Thinking of teams like Double Fine and games like Stardew Valley here.