French Breeders Co-opting Institution of Civil Unions

While only heterosexuals can legally marry in France, the Times reports breeder couples are snagging two civil unions (or pacte civil de solidarité) for every three marriages, because they’re less committal and offer some of the same tax and legal advantages, and can be dissolved with a registered letter rather than a divorce proceeding. How come nobody warned us about how heteros were going to ruin and redefine the definition of second-class marriage?