In this case, probably yes. Might want to remove the post, it's a fairly major violation.

Often, names alone wouldn't necessarily constitute a violation as names are generally not sufficient to count as personally identifiable information... but a name like 'Bobby Null' is, I think, quite unique.

When I was being trained on HIPAA compliance I was told that sole first names are generally perfectly fine, and sole last names can often be fine but should be avoided for very common names. But I should also say that I am not an expert on HIPAA compliance.