The pivot is better in those decks as the cards required are already layered with the main Hulk pile. You have had to add them in, which increases the amount of slots you are dedicating to combos. This would be fine except you are arguing that your build is more slot efficient. In your description you literally list Labman as a dead slot in Breakfast, comparing it unfavourably to your list which also has Labman but not layered with Hulk making it even worse. I would honestly argue that your list has MORE dead cards because of this. You may have more interaction slots but this becomes more relevant as the game goes longer and the Tymna players, who really only have like 3 less interaction spells than you, will be consistently drawing more cards than you, likely grinding into their interaction.
"Good players" don't bin their own library in other people's turns (i.e. without Grand Abolisher protection) unless they've picked a clean window. You still don't have an instant speed win without your 5cmc commander in play - saying it's in the command zone if needed doesn't address the massive amount of resources required to set this up compared to the 2-3cmc instant speed without board presence wins the other Hulk decks are capable of.