Yeah, I am worried about this and I also think it's a bad metric. I could see a scenario where this metric is really important for a few years and then, when cooler heads prevail, it gets scrapped.
One major problem with WAB is it doesn't take into account, at all, the the manner of victory. Getting blown out by 40 vs. losing on a last second shot in quadruple OT? To WAB they are the SAME. Here's a fun example, for it's 21 point blowout loss @ Kansas, Iowa St. got dinged to the tune of -0.18 WAB. Our OT loss @ MSU got roughly the same penalty, -0.15 WAB. UConn's OT win @ Seton Hall (#80 NET) got them +0.51 WAB, similar to our 36 point obliteration @ USC (#78 NET) which netted us +0.53 WAB. This is why Miami (OH) does well in WAB. It's basically just Wins and Losses with a glossy analytic sheen.
Comparing against other Big Ten teams, Purdue, the team right above us in WAB, gets the exact same credit for winning in OT @ Nebraska as we get for winning comfortably @ Nebraska. Purdue also gets the same credit for their 5-pt win @ USC that we do for our 36-pt win. What should be a point in our favor in a direct comparison becomes a wash. MSU, who also has a better WAB than us, gets a lot more credit for their OT away win against lowly Rutgers (+0.33 WAB), than we get for dismantling the same team (26 pt win, +0.13 WAB) merely because we did it at home, and therefor the "average bubble team" has a higher winning% for that game. But, against a bad opponent, what actually is more impressive? Scraping by in OT away, or winning by 26 at home? That OT game against MSU was the closest Rutgers got to beating anyone good - should MSU really be rewarded for that?