I think I've noticed this as well.
A lot of those who claim to be “Reformed” really only care about what the Reformers taught on TULIP.
When it comes to anything about modern sensibilities; marriage, duties of husbands and wives, politics, or civil government, it’s always “semper reformanda.”
How convenient! They love the Reformers when they talk about election and predestination, but when the Reformers speak on everything else, they got it wrong.