This is a fairly typical reaction, as far as I`ve seen. Several other news and variety shows have done similar man on the street interviews asking people what they thought about Scarlet Johansen playing the part of the Motoko Kusanagi. For young people not overly familiar with the source material, they are mostly positive in those interviews.
I work in a factory in Japan, so I have a lot of coworkers in the 30-40 year old range that are mecha and anime fans. I asked around, and the reactions were mostly positive. The one negative, was from an older fan, who followed the original manga. He was upset that it looked too much like the anime, both movie and series. He considers those to be unfaithful to the original manga. But he was fine with Scarlet Johansen playing the part of Motoko Kusanagi.