It is impossible to know if the beekeeper would notice anything. Certainly the write up makes it seem that all colonies looked the same.
The problem is, anyone that had managed a number of hives knows that they don't all look the same. Generally one does a fair amount of management to keep colonies of equal strength.
And again, are we really suppose to believe that strong full hives of 20 . that are fed weekly never try to swarm, never run out of room and need superstition or combs spun out.
There simply isn't enough detail provided to make one think that the descriptions of the management is accurate.