Matthias is simply doing what he can to keep the people he cares about alive and happy. Harsh as it may sound, his troops and their families come first to him, not Random Joe Freighter Pilot. He is not proud of what he has done, but he does not regret it either.
He is a man of principles, and he will stand by them until the end.
Lastly, if that's a fair development line, I'm taking this: