I don't think size necessarily matters. Some people write 1000 words of non-sense or something overly wordy and pedantic. When you talk about human affairs or daily observations, you can get your point across in 300 words or less honestly; so people shouldn't get too concerned with how long something is as long as like you say, it provides something valuable whatever that may be.
It would be great if all people would think this way, but sadly most of the Steemians consider length as being value even if it's a post filled with shit.