"Normal" is a fluid term. It changes based on what the majority thinks. At some point slavery was normal and a part of life. But we as a society decided that we should move away from oppressive systems that marginalize and discriminate.

So, while it's true that in many cultures "entrenched gender roles" are considered normal, that doesn't mean certain people aren't suffering from it. In fact, it doesn't require much debate to acknowledge that in a system where there’s a power imbalance (in other words, inequality), there will inevitably be an oppressed group, and therefore, suffering.

As long as you consider "reducing the amount of suffering" an "absolute good/right", then abolishing entrenched gender roles is an absolute good. Promoting gender equality doesn't mean that women are prohibited from going to the kitchen and men must be stay-at-home dads. It simply ensures that these roles are a matter of personal choice rather than societal imposition.

Moreover, gender equality is not solely a liberal value; it has been promoted in various ideologies, including socialist and communist systems. While the practical implementation has varied, these systems have often supported the idea of gender equality alongside broader social reforms.