They're always going on about trying to fight and defeat Merlin that they forget to stop and think whether or not they should. Like, come on, gather some intel about the guy first before whipping out the biggest stick you can find.
Guys, come on, you can't just solve every little problem by killing people. They're only an annoyance, and frankly not worth the effort to kill right now.
@mrmagestrate I'm pretty sure he tried that in the earlier chapters, but she laughed him off and now he's convinced this is the only way they can "talk it out", so to speak.