The moral collapse of a society does not begin with its weakest members, but rather with its leaders and the heads of its families. When the older generation sinks into hypocrisy and sin, they lose the moral standing to criticize the youth. The primary approach among commentators is that God refrains from punishing the daughters and daughters-in-law for their immoral acts because the true blame rests on the fathers and husbands. The younger women are merely copying the corrupt behavior modeled by the heads of their families [מצודת דוד, אבן עזרא, רד״ק, מלבי״ם]. It is also possible that these are young girls who are not yet held fully responsible for their actions [אבן עזרא]. Taking a different perspective based on Jewish law, [רש״י] explains that God stops testing women suspected of adultery with the bitter waters. When the men themselves are tainted by sin, the waters lose their power to determine a woman's guilt.
The sinful behavior of the men operates on two distinct levels, differentiating between ordinary immoral women and those dedicated to idol worship. [המלבי״ם] and [מצודת דוד] explain that the ordinary women are married but commit adultery in secret. Consequently, the men withdraw from society, separating themselves to meet these women in hidden places. Conversely, the cultic women are devoted to idolatry, and with them, the men offer sacrifices publicly and joyfully in large gatherings. This withdrawal by the men is understood in other ways as well. Some explain that they join groups dedicated to heavy wine drinking [רש״י, רד״ק]. Others suggest they behave like mules driven by lust, or that they engage in unnatural relations meant to avoid having children [רד ק בשם אביו].
Offering a completely different perspective, [אברבנאל] suggests that the entire situation is not about physical immorality at all, but rather serves as a metaphor for idolatry. Women, being easily influenced, are drawn to superstitions and learn from the men who abandon God in favor of pagan worship. Because they are simply following the misguided lead of the men, the women are prone to error and are not punished severely.
Ultimately, a society that loses its way faces destructive consequences. A people without understanding will inevitably suffer. This outcome is viewed by some as a physical stumbling and downfall [מצודות, רד״ק]. Others see it as a state of deep confusion and helplessness, where people simply do not know how to act [אבן עזרא, רד״ק]. A final interpretation views this as a state of futile exhaustion. The people will endure blows and hardship, but because they fail to understand the spiritual cause of their suffering, they will merely grow tired from the endless disasters without ever correcting their ways [רש״י, מלבי״ם].