I think the family is the basic mutual aid structure and should be strengthened. People with good family support are more materially and emotionally secure. Strengthening/changing the family can be called "abolishing the bourgeois family", depending on how the terms are defined.

The nuclear family (a term that didn't exist when the Communist Manifesto was written) is not a great mutual support system, mostly because of its fragility. If one parent dies suddenly, or is mentally ill, or something, the whole thing gets disrupted, everyone's lives get messed up. But it's not the only system. Lewis Henry Morgan in his 1871 work Systems of Consanguinity and Affinity of the Human Family talks about six kinds of family from different traditional cultures; there's all sorts of possible models.

I don't really agree with the "just choose your family!" stuff that neoliberals say. That's a symptom of atomisation. Consanguinity is here to stay.

Another point is that a political program shouldn't attack the family. That's gonna be unpopular. Replace it gently.