Seemingly, Embraer has taken a page out of Michael O'Leary's book; any publicity is good publicity.
Realistically, until the day a machine passes the Turing's test, there would be significant and utterly unacceptable (by aviation authorities, that is) redundancy loss by reducing flight deck crew to one.
When the day comes, we'll have much bigger issues to worry about than single-pilot airliners.