DP is one of these people.
I am in charge of all decisions. It sounds great, but it really isn't. We're in the middle of renovations now, and I have to make every single decision on my own because DP is 'fine with anything'. It's the same with food where I am tasked with what to order because 'anything goes'. Same with holidays where I have to decide on the location/hotel/activities because DP is 'OK with whatever'.
I am not picky. In fact, I eat a much wider variety of food and have gone on much more varied holidays compared to DP so this isn't a reaction to a bad experience. And yes, we've talked but what usually happens when I say that I won't be making a decision is that nothing gets done and nothing gets chosen till I finally give up and pick something.
It's all really starting to annoy me these days.