If you had read the threads OP you would know why people object. Different people have different reasons.
I don't mind an upkeep cost. What i will mind is that cost applying while i'm not playing.
Imagine OP, if you care to, taking a break from the game for some months, only to discover your FC has been decomissioned.
How would you feel about that?
Imagine going out exploring with your fleet, taking a break, then logging back in to discover your fleet is god only knows where, your FC has been decomissioned, and perhaps you are left floating in a remote region of space in a ship without a fuel scoop, because the last thing you were doing was mining or derping around on planets in a dropship.
Think about it.