Too many eggs spoil the soup

The speaker was talking about limiting the number of people doing a particular function so it could work better.  This appears to be a mix of “too many cooks spoil the broth” (too many people involved in an activity can ruin it) and “put all your eggs in one basket” (make everything dependent on one thing).   Soup is also broth so I think that is where the word broth comes from.  There is also egg soup which the speaker may have been thinking about.  He may also have been simultaneously thinking how all the people involved were good eggs.   A big thank you to Susan Edwards for hearing this one!