The Sportsman division is just becoming the modified drivers version of the old "Busch Series" in NASCAR. Something to run while they are there anyway. Having a bunch of modified touring regulars eat up the headline sportsman shows does nothing for the sportsman teams who support the class weekly, nor does it help grow the division long term. Great for promoters in the short run with big names and higher car counts, terrible for the class in the long run.
Even if none of them got sent home, these races pay better and they get cherry picked by the mod touring regulars and the weekly sportsman racers don't get a decent shot at the bigger paydays. The sportsman class was intended to be developmental class to help develop future modified drivers and teams. It's turned into something quite different.