HawksCode interview questions

Our TPO contacted this company for campass placement. Company set their interview schedule for 6 students among us. We have to go to their office for walk-in interview. That's how the process begun.

It took 3 days for fresher interview. On first day there is an hr round. after 2 days i got a call from hawkscode and next day i went there. the ceo was taken interview who has no knowledge of iOS Development. I was comfortable with swift programming language,But he want's objective-c. No problem, But then he asked me why i cannot learn objective-c. Swift is useless. only objective-c is usefull to make iOS apps.