@OP, You don't need to wonder any longer.
If you can't abide the rules on the server you are playing, turn off your computer.
But do not come here on the game-forum to ask if it is legal.
YES, outlawing luci-spam is legal
Get over it.
Despite the attidude,
Caveman is correct and saying that this is a decision
which is made by the server admins on each server.
You should always attempt to follow the rules for
the server you are on. If you want to play
on a FF server that does not outlaw luci spaming,
come to the [OPP] server. Purposeful TKing
will get you kicked however.
overall note:
random firing of any weapon, esp the lcannon,
will get your own team angry at you. If you
are purposefully hitting them, you deserve a kick
or ban. If you are not, you should try to win
this TEAM GAME by not hurting your cause. Pick
a weapon that is less dangerous to teammates
and aim more carefully. As with everything else,
practice makes perfect.
~ B1ackmagic