Looking around, it really isn't with many of the parents I know. There are just so many things one can disagree about. Food choices alone are very hard for some. Sugar or not, how much, and vegan diet or not, .. (We try to be as pragmatic as possible, as healthy as possible, but not dogmatic). Then, is it ok to play with toy weapons, what movies to watch at what age, how much screen time at all, ...
With my partner we were quite clear how to do it in theory before. But in reality there are many things we disagree - and then it is an art, to find a consensus about it, while the kids are watching. Otherwise it is an invitation for them for learning how to manipulate.
So good for you, if it was quite easy for you. For many it isn't for various reasons. So some probably just should have the courage to go with it, before they are too old. For others it might be better to wait.