Don't forget that they just about all take a redshirt year and a medical redshirt year. They leave high school older than normal as well. No wonder they have a team full of 23 year old freshmen.
It seems that the only group taking advantage of this bizarre loophole is the mormons. Anyone know of any other examples? The NCAA needs to eliminate the mission exemption as discriminatory bias in favor of BYU. No one else seems to use it.
If BYU wants them to go on their trips, have them do it after all of their eligibility is over. Sure, they claim it is for "religious and lifestyle" reasons why they do it when they do. But for the few athletes involved, they should make an exception and move the trips back to ENSURE fairness. It isn't like they are lacking in examples of bowing to pressure to at least give the appearance of civility. There is the "prophesy" that suddenly blacks can be elders after their religious tax exemption was challenged by the Department of Justice. Also, they publicly disavowed polygamy even though it is still widespread.
For the small number of people affected it is worth the inconvenience of taking the trips AFTER eligibility ends. That would get rid of all this animosity, probably rightfully earned, towards 25 year olds racing 17 and 18 year olds and the seemingly never ending college careers of these BYU guys.
As far as why BYU is successful, aside from having mature adults competing against teenagers, there are other advantages. They go to a pretty easy school, very little academic pressure. A good chunk of their courses are required "religion and theology." These guys have been basically studying this same subject for nearly twenty years already. And when they have eight years or so to complete the other courses required for their major as opposed to four at a normal school - well..... Also, their social life is very insulated. Their biggest stress is finding someone at the ice cream social willing to marry them. Tuition is practically a non factor, so even with a designated number of scholarships they can load up on people who will go there because it is pretty much free. As for the scholarship limit, it must be a nightmare for the NCAA to track compliance with the myriad redshirts, medical redshirts, mission trips, etc..