I do not get the issue with things like this. We all knew it would eventually happen, why should gay and lesbian marriages be held to a standard that "traditional marriages" cannot achieve. Now that Marriage Equality is around we should have expected someone out there to be ready for the probable results.
There is a percentage of people that get married, "traditional" or otherwise, who will ultimately get divorced for one reason or another, and odds are it will end up a matter for divorce attorneys to fight out. All the usual items will be under consideration. Handling issues related to children, division of marital assets, estate issues, lasting financial dependence, presentation to a judge on the merit for a divorce, various other costs, etc. It is all relevant, and all likely to occur.
We have no reason to assume otherwise that a law firm would eventually specialize in dealing with these matters for gays and lesbians. Why is this really a problem?