Supposedly, the point is that Starfleet
can't interfere. Which is rather sensible: soldiers should not be given the right to make policy decisions! But politicians probably can interfere at every level, including deciding that a certain primitive world is to be contacted. It's just that no Starfleet officer can make such decisions on his or her own.
A ban on Starfleet interfering with Federation member world affairs was established in TOS already, in "Cloud Minders" where leader Plasus of the member world Ardana threatens to report Kirk's attempts at interference to Kirk's Starfleet superiors.
Now, Starfleet also appears to serve as the sole police force of the Federation, making it a bit inconvenient that they can't "interfere"...!