It's really... not? I guess, it probably depends on the person too. But at some level, you have both a lot of power to influence things accidentally in a bad way if you're not careful, and at the same time absolutely minimal power to actually get stuff done (you always need to rely on others for the "doing" part, oftentimes several levels deep/ with a lot of potential for miscommunication).
Those opaque decisions? You _have to_ take decisions, because not taking decisions is very often worse than taking a bad decision. And you don't have the information, you can't have the information, you need to work at a high level of abstraction because it's impossible to know all the details. Unless the relevant details are being communicated to you just in time (spoiler: they won't be), you won't know them. If you actually care about how well you do your job and what is your impact on others, it's not a walk in the park, at all.