How looks the game manual is totally wanted by the BBs, not GMs or old users, but the BBs. They said many times it was volunyarily unclear. It's the same about the difficulty (not so difficult if you follow instructions) to get 48 minutes in one game for a player.
Two sentences with no connection between them.
The BBs wants things to be unclear are related to things that needs to be explored.
They want the game manual to be clear, as this game is needed to be played.
Saying that the "48 minutes for a single player on a single game" is something that they want to keep unclear is guessing. At best...
If they intended it to be unclear, they can write it down as well at the manual page - "Using any tactic or/and setting any lineup, may not lead to a player playing full 48 minutes on that game."
There is a huge gap and difference between game-manual, and game walk-through.
This is definitely a game-manual information, as it caused users to find the game acting the opposite then what it was expected upon the manual.