I am reluctant to embrace Boise, too, but the bottom line is, they're damned good at what they do. They've long since erased the stigma of being a "gimmick" or a lucky team. I forget what their record against top 25 and top 10 teams is over the last decade, but it's pretty good.
The main caveat I give to Boise is that because they play such a weak schedule they have the luxury of planning for one team for weeks at a time. They have their base offense that NOBODY in the WAC can stop, so they don't have to do any game-planning for those opponents. They can spend all of Fall camp focusing on VA Tech, or several weeks in the regular season focusing on Nevada, and when the bowl game rolls around they are fresh and unburdened with injuries because they haven't played a rugged conference schedule like the rest of the good teams.
It is not Boise's fault, but it is unfair to put them in the same plane as Alabama or Oklahoma or Ohio St. or Oregon. Bottom line is, not one of those teams would have a different record than Boise's had they played Boise's schedule. On the flip side of that, there's no way that Boise goes undefeated last year playing Alabama's schedule, or Ohio State's. Through sheer attrition, injuries, whatever, they would have dents in their armor that good teams could exploit.
This is why a playoff is a better answer to the National Championship question than a bowl system. With a playoff, no matter how creampuff Boise's schedule is, they're going to have to earn the title in at least two tough games.