The problem is not the foundation or the excluder, it is simple let the bees do what the bees do. If they have a need, more honey and no place to put it they will go up and fill the supers. Now we can trick them and have them fill up the supers, but no honey reserves for them and you will have a dead bang hive next year. I have always used excluders and plastic/cell foundations. Never had a problem and the bees do just fine. The weather along with package bees, what do you expect? The first year all I ever expect is for them to fill out the foundation and stores for them to over winter. That should be everyone’s goal, the bees first, then excess for me.
I know lots of bee keepers who did not follow the advice of bees first, they are no longer bee keepers, and almost all 99% have lost the colonies. Drought no nectar and you want honey? I think the situation requires due thought before action.
Just my two cents worth and a little over 100 years of bee keeping at this end
Ron