Question: What does the ACBL call a bridge player who doesn't care about masterpoints?
Answer: A nonmember.
My mother doesn't care about masterpoints. She plays duplicate, but she plays at non-ACBL clubs. Non-ACBL clubs are cheaper because they do not have to pay any fees to the ACBL.
Bottom line, there is not much reason to pay dues to the ACBL or attend ACBL clubs except to collect masterpoints. Almost all ACBL members care about masterpoints; some care a lot. Bottom line, the ACBL exists as an organization primarily because it manages masterpoints. It should be very concerned with the problem of managing masterpoints wisely.
Other awards are based on masterpoints. Many players try to earn Life Master, but the other rankings also are pursued. Many players notice their rankings in various races, from everything to the Barry Crane 500 to the Unit Mini-McKinney to the monthly posting at their bridge club. In many ways the ACBL does an excellent job of making masterpoints interesting.
The logical response to this is to say that masterpoints are unimportant and have no value. In short, players become disillusioned.
When players become disillusioned with masterpoints, they become disenchanted with the activities associated with winning masterpoints. In other words, winning masterpoints isn't as much fun.
And when they become disenchanted with masterpoints, they become disengaged with those activities. In other words, they don't play bridge as often for masterpoints.
I see widespread caring for masterpoints, but I see widespread disillusionment too. It is impossible to know how much disillusionment there is with masterpoints. To take a guess, I estimate the disillusionment with masterpoints to be around 33%. In other words, I imagine the enthusiasm for masterpoints that would occur if awards were equitable, and I estimate that currently players on the average are at about 67% of that level.