Impeachment and the threat of it are an excellent and necessary correction for this mess we are in with judicial activism. However, I do not see that as the only response to the current marriage threat. I support the FMA and I hope it will be ratified. Even if it is only pushed toward the brink, it may do an enormous amount of good as a shot across the bows of the activist's ships. That might be enough.
Also, Amendments to the Constitution being political "footballs" I do not see as a problem. An active political process is good for the country.
An active political process is fine. It should be more active by involving more people, not by affecting more things. The Constitution, in particular, should only be amended when there is something actually wrong with the Constitution, not simply when someone wants to make a point.
There are two things we shouldn't take for granted: One is how well the Constitution, battered as it may be, still protects us from the abyss. The other is how deceptively easy it is to amend the Constitution, once it becomes an acceptable thing to do in response to whatever grievance. We shouldn't be playing games with something so important, not when we have another option that will do a much better job at defending the Constitution.