That's all fine and dandy and yes Norman Osbourne (reformed for this indefinate time period), Venom (Eddie might be dead, we dont know), and a few others all of which are pretty much MIA for the time being know his secret identity. But if it becomes public he's Peter Parker, then he's gonna have fuckers like Big Wheel, Sineater, and the Spot fucking around with Aunt May and Mary Jane. And even if the government gives him protection (I doubt it since he's regarded as a villian in New York City) what happens when someone like Morlun or the Juggernaut comes along (he'll be back someday goddamn it!) and the government is pretty unable to stop them. This is all not to mention that Parker would lose his job the second that Jonah finds out, and he WILL find out.