Hmmm… I think you’re right. It indeed seems to be an example of the Henpecked Husband trope where the joke is that he terrorises the town but in his own house she is queen. But I think there’s also a civilizing element in that it shows Everett being restrained by his wife, who is represented as the responsible center of the family and home. So in a sense, Everett is a good guy because he backs down and does not go against family/home. In the strict male/female role dichotomy of the time, just as Everett outbursts against societal forces that oppress everyday man, so does Mrs True outburst against societal forces (represented by Everett, since he’s the center of the strip) that oppress everyday woman.

I’m still a little uneasy about the double standard that women can’t be abusers, and the fact that Mrs True is stuck in the gender roles of her time, but at least the strip attempts to consider the perspective of the women who are stuck in those roles.