True, there are contexts where it's not necessarily the most helpful thing to say. And in the case of that particular comic strip, it's just wince-worthy. Ishida's feminism is frequently over-simplistic (not to mention deeply flawed with the sex-shaming, anti-porn, demonising of sex work and other shitty things), and while he can sometimes make an incisive point, more often he's just disingenuous. The "why shouldn't I hate my oppressor?" strip skirts around some relevant issues ("why do you hate men?" as a derailing device, for instance), but in execution it just... doesn't really work.