Not sure of understanding why not... I mean, I understand that you can not create the table in the "row mode" as you don't know the number of columns at starting type. However the database name depends only on the user name.

Or probably this is related with the "operational procedure" for "row mode" deployment scenarios, in which it is assumed that all the schemas in the MySQL database are proviously done out-of-band outside Cygnus operation? In that case, I would modify the comment to explain it in that way.