A. The Annulment "reforms" have had virtually no impact on most people getting an annulment.  The few people I've heard of who have tried to begin the process after the "reforms" were in place have complained about it as being as daunting, bureacratic, expensive, and time consuming as it was prior to the reforms.  

B. Having to get an annulment is itself a burden that people shouldn't have to deal with especially if the divorce was messy/ painful or the ex-spouse is abusive.  

C.  Even if people choose to ignore it, they could be outted by the tattletales who enjoy running to father and informing on others' lives.  They also may run into issues when they try to get their children baptized, enroll them in Catholic school, or register with a parish.