Hi gablesdad - yes Vassar is conducting alum interviews. As an alum interviewer, we had a record number of requests for interviews in 2020/21 in my state. It looks like we will be inundated with requests this year as well.
The interviews are informational rather than evaluative. Every little bit can help, but in my 25+ years of interviewing Vassar applicants, these brief meetings can have an impact on only very rare occasions.
Best of luck!