Where did it say that? It's 6 AM so I wouldn't be surprised if I missed it, but all I saw was them stressing how important Mars and the Moon were... which seems to be exactly what I was saying. It also says "It did not emphasize options such as asteroid mining."
The Committee's final report does mention the possibility of evaluating near-Earth objects for "their utility as sites for mining of in-situ resources."
The proposed "ultimate goal" for human space flight would appear to require two basic objectives: (1) physical sustainability and (2) economic sustainability. The Committee adds a third objective: to meet key national objectives. These might include international cooperation, developing new industries, energy independence, reducing climate change, national prestige, etc. Therefore, the ideal destination should contain resources such as water to sustain life (also providing oxygen for breathing, and hydrogen to combine with oxygen for rocket fuel), and precious and industrial metals and other resources that may be of value for space construction and perhaps in some cases worth returning to Earth (e.g., see asteroid mining).
it didn't put emphasis on asteroid mining, no, but asteroid mining would be the easiest and most cost-effective way to meet these goals, so it's highly unlikely that they'll just push it out of mind. the only problem is that it'd be expensive as hell to get started, and nobody wants to take the first step because everybody's afraid it won't work out. they stress the Moon and Mars because that's what everybody (i.e. investors, the general public) wants to hear; nobody's cared about asteroids since Armageddon.
what we need is either a crazy billionaire or another bad movie about asteroids to get them back into the popular consciousness.