> The large majority of work on quota adoption suggests that quotas are followed by the greater substantive representation of women’s interests, priorities, and preferences. However, several studies have documented cases in which quotas have resulted in limited policy changes or even more gender-inegalitarian outcomes. ...
> On average, quota-elected women appear to influence policy in ways that substantively benefit women constituents, either by distributing resources in ways that reflect women’s priorities or by enacting or enforcing policies that grant women greater rights. Yet, these findings are not universal, and some work uncovers null results or even instances of backlash against women officeholders in ways that exacerbate patriarchal policies and practices. That there is such variation in the observed policy effects of gender quotas suggests the potential for moderating variables.
That's specifically on policy making, but I think it's enough to highlight how evidence of backlash - which certainly does exist! - isn't on its own enough to make data-driven decisions.