To be fair... he does have the word of GoldFeather and Raum.

Neither of whom he knows or trusts.

Yep! I do like Belial's comment here (because it is a little goofy and I do appreciate that about him), but Axis makes it... less comfortable, in part because this is a diversion from him confronting the Sentinels, and in part because I always expect him to show his true colours.

Given how horrible he is toward the women in his life, you're very right to be uncomfortable hearing him talk like this.