I know that, but does SomeRandomClass.renamedMethod() knows that as well?

There may be plugin authors out there which use (don't break plugins policy)
Bukkit.getServer().a().b().c().getPlayerList().getPlayerCount();
or potentially somewhere within CB (future proof)
for (int i=0; i<server.playerList.getPlayerCount(); i++)
    server.playerList.players.get(i).sendMessage("Test");
some players won't recieve a message!