It works the other way around as well. The left votes for social issues that upset the established cultural state, and which in the grand scheme of things will have minimal real impact (like transgender people using any specific bathroom). Social issues are a dividing force that occupies both sides of the spectrum, it's conveniently used as a means to divide and conquer. It's why most politicians will take on social issues as their political battle cry and shy away from issues that will impact financial markets. It's easier if you don't bite the hand that feeds you (wealthy donors).