Corporate America, especially one as competitive as aviation, uses these hiring procedures for a reason and a reason that justifies the expense. Hiring people is awesomely expensive and firing them, union represented even more so, awesomely expensive and difficult. Hiring psychologists, writing tests, raking management pilot time, and reviewing apps must be worth it or it wouldn't be done.
Hundreds of corporations cannot be wrong and airspeed1974 clairvoyant.
Speaking of which, thinking you are owed an interview because you "paid your dues" is beyond entitled. DL, UCH, AA and every other employer owes you nothing until you are employed.
GF