Review Detail of Yztif in My Maids Are All Antagonists!

At first, this novel looks promising. Super powerful beauty maid. These powerful maids seem to be very loyal to their master(this is how the novel tries to portray). Yet, at around chapter 28 or so, when their master was attacked, they just stand by and watch? Their master did not say, "hey don't make a move, I will do it myself" or something like that. They as a powerful combat maids assign to their master, seeing their master taking verbal abuse, seeing their master being attacked by those ants, yet they did nothing. Logic is a bit weird here. I know, the author tries to make MC show his power, but the circumstances are wrong. This kind of situation when ants verbally abuse their master, even try to force their master hands and attack him, yet they did nothing? Are they the master or what, they have to let their master do the dirty work himself? Is the role opposite? Would MC become a maid, and those maids were MC's master? Some logic is a bit wrong here. That is my input after reading chapter 28 or 29(and I will stop here, logic weird can't continue in order to save me from getting frustrated from not seeing or understanding the logic through).