I don't think people are ignoring it so much as doubting its real worth. Sure it's a bit more convenient, but the question is whether there's enough of a difference to be worth the downsides. Given hot water, the effort of sticking a filter paper in a cone, adding some coffee, and pouring water over it isn't particularly great...

[If you want to grind the beans for better taste, that's of course a bit more effort, but not something the keurig offers anyway.]