Exactly, relying on one striker is dangerous. What if they get injured are or just off form? I prefer the team mindset of everyone taking responsibility for scoring goals.
A big season for him, higher level and has to prove he wasn't a one season wonder. Might be difficult to keep him come January or at the end of the season if he can continue to progress.
I don't think he is a 20 plus striker. But if he could hit about 14 and have about 10 assists that would be a good contribution, especially if 2 or 3 of the midfielders can nudge double figures.