While I agree banning marriage outright in comics is inherently stupid, how many comic book marriages have actually been done well? Or not been subject to intentional sabotage?
Lois Lane and Superman? DC did everything in their power to stop the marriage from happening, including giving Lois a sleazy ex-boyfriend to hook up with during and after "The Death of Superman" (the oh-so-disgusting Jeb Friedman), had her dump Superman upon Jeb's death, made her emotionally abusive to Clark and unaccepting of his life as Superman, had her repeatedly try to walk out on Clark during their marriage for selfish and stupid reasons (this isn't even counting the time the Parasite impersonated her), and had her being irrationally jealous and hateful toward Clark's female peers. There were also numerous story pitches to "One More Day" the marriage out of existence (including an infamous pitch by Mark Waid, Grant Morrrison, Mark Millar, and Tom Peyer), constant complaints from the writers about how the marriage was inherently horrible and how the Love Triangle was inherently superior, and endless whining about how WB interfered with DC's grand plans by expecting DC to honor their original deal to marry them off in tandem with LOIS & CLARK (a show developed at DC, no less!). I remember fans calling Lois "Superb****" for the way she treated Superman and creators like Gail Simone calling Lois out for her behavior, but DC insisted tooth and nail that Lois was being a strong female role model and the complaints were unwarranted.
Spider-Man? Even before he sold out MJ and Mayday to Mephisto, the Clone Saga was intended to destroy his marriage from the off. Failing that, they tried killing MJ off in a plane crash (it didn't stick). Unlike Superman, Spider-Man actually had a strong, solid marriage with actual staying power. It still didn't stop Marvel from wanting it snuffed.
Green Arrow and Black Canary? Sabotaged from day one. There was never any intention to making that work, which was a total shame.
Reed and Sue Richards? Well, there's always Namor chasing after her. Can we really say with any credibility that smashing that couple up isn't something Marvel's wanted to do on and off over the years?
Aquaman and Mera were broken up for a long stretch prior to the 2000s. Heck, they even killed off Aquaman's son for no good reason.
The less said about Ralph and Sue Dibny and Ray Palmer and Jean Loring, the better.
Let's face it, the insane hatred of marriage at DC and Marvel has been going on for a long, long time now. Can we really be so shocked that it's now being enforced as official policy?