Sadly unlikely because it's rooted in biological differences (mainly hormones), so on average there will be sex-based differences. I'd love it if people stopped stereotyping because of that but I doubt itll ever happen. Maybe we can at least get rid of the idea of gendered hobbies and such, but even then most people want to identify as part of a group so there will likely always be some association.

It's less that the social construct is failing, and more that we're finally letting it flourish.

Tying the way you present to the world to one of two options often linked to your gonads is extremely limiting. What you describe isn't the failure of gender, it's an explosion of genders.