The game book doesn't really cover when to transition from free play to a score. It doesn't give tips on if the players just want to stay in free play and do little things (mine wanted to send mail bombs, which didn't really seem to fit into the score layout).
The game book wasn't very clear on how active vs static the neighboring gangs should be toward each other, or at least if it was I didn't find that info easily.
*Also, your reddit example just sounds like people being aholes.
Naw, most of the time people coming from other more conventional systems haven't really on-boarded the GM and player guidance. People do absolutely provide lots of feedback/advice, but the "have you read the GM guidelines?" is pretty necessary since often the questions make it clear people either haven't or haven't quite grasped what the game wants with its explicit statements. IMO the organizational structure of the book is terrible, as we've all noted in this thread multiple times.
However, your first point is wrong; it absolutely does cover free play to score and that the GM should be pushing players towards that Target declaration that is a concrete transition to Plan/Detail + engagement roll. (see: pages 8 & 125).
Regarding active/static - that's the Faction Clocks you bring into play as they impinge upon the Players and their interests (and those the GM wants to have humming along), and the Situation/Enemies on each detailed faction list. Combined with the sample Starting Situations in the book, it should be relatively clear how to bring it all into play as you wish.