It's one thing to give up more points than any team in FBS history. It's another thing to do it against teams like Louisiana Tech (#87), Northwestern (#89), Army (#97), Liberty (#116), Coastal Carolina (#125), FIU (#128), S Illinois (#129), Charlotte (#132), Rutgers (#134), UConn (#175), and Akron (#210).
Outside of Akron, they haven't even been competing with these teams.
BYU is ranked almost 30 spots higher (per Sagarin) than the best team UMass has played so far this year.