So, as pointed out, this isn't *currently* a real piece of tech. But I suspect, give it another couple years and there will be automated avatar-type systems, potentially on both sides of screener interviews.
What I could see them being used for (from the job-seekers end) is a sort of "automated voice-response resume." Perhaps you get a software package (or more likely a subscription to a service,) that has a set of canned interviewer questions, you feed in your resume, answer the canned questions, then turn it loose for headhunters to contact. Now, "you" could deal with hundreds of recruiters a day. The reason for it to be a subscription would be the service would periodically update the interview questions.
Would people be able to lie with such a system? They already do with resumes and over-the-phone and in-person interviews, so, yes. Is it likely this would turn into a case of the headhunters automatic systems scraping your info from LinkedIn etc, calling the avatar, and making the initial decision? Yes, amusingly it likely would devolve into machines interviewing machines for people...
As for the other question, if I had hiring authority would I want to "interview" an avatar like "Hank?" No, I wouldn't. You're not going to get an idea of what *kind* of person the job seeker behind the avatar is, as there won't be any of the nuance we unconsciously (and sometimes consciously) pick up from tone, cadence, and inflection in someones' voice. I'd have to treat any sort of avatar interview as nothing more than a fancy-pants resume.