For the most part, I think that would be considered on topic, although this might not be the best place to post such a question. Interpersonal Skills also can answer questions of that nature when they're not particularly parenting-focused, and will likely get more attention from a more heavily trafficked site.
The question Stephie linked would probably disagree, and I honestly personally would probably tend to agree with that, but it's not been the general consensus of the community as far as I can tell for years - we've permitted questions dealing with adult children, and children asking about their parents, for quite a while now.
I'd suggest the general rule: if it's a question where other parents would be specifically knowledgeable, in their capacity as parents alone, ask it here if you wish (or on Interpersonal Skills). If it's a question that another parent would not have a particular insight into, as opposed to an otherwise identical adult that did not have children, then ask it on Interpersonal Skills.