EpisparhShg56
Could you kick out the stowaways from your carrier if you don't want them or carrier is like a small planet?
No. The only way you can remove a CMDR or assets is to decommission the FC itself.
I'll also add that there wouldn't really be a point in kicking them out even if you could. Fleet Carriers don't have a limit to how many players can be stored in them. They exist in all instances across all platforms. They don't count toward upkeep or tritium jump costs. If it wasn't for programs like Inara to let you know a player is on your carrier, you'd never notice as there are no negative effects.