People do have conflicts and differences of opinions in relationships, but some people cannot do anything any other way than THEIR way.
They need to have everything to their exact liking otherwise they get anxious or irritable. They either can't be flexible & compromise or just don't want to.
It's damaging to children (speaking the child of this type of parenting). The impression you get is that you are incompetent at almost everything you do, you cannot be trusted, or you must be saved from your own stupidity. The parent may never call their child an idiot, but this is what this type of behaviours communicates to a child & adult children.
I have told him on previous occasions that I am an adult and that I manage these things when he is not around
And it's fallen on deaf ears, hasn't it?
OP, he sees you are little more than a large child, and your words carry as much weight as a child stomping their foot down and shouting 'I CAN drive the car Daddy' (when the child is 6 years old)......except...you're not a child.
Some men are like this to women as well. We must be saved from our pink, pea-sized brains by lofty-minded men who will show us the 'right' way. 🙄