So basically he's got his own agenda, but he's been honest about it. Works for me. Hell, that describes half the members of the Railroad.

[The ones that aren't in it because they believe in Freedom and synth rights; they're in it to pursue a personal grudge against the Institute. Deacon's careful with those. They can be loose cannons. But they're super useful, too. The Railroad would be seriously lacking in manpower without them.]