So, people know how hit points work.
Notice, also, I specifically noted that up to four goblin minions could take the action.
Minions rule at weekend box office
In fact reading your comment properly, you could do a boss whose stages are entirely composed of minions.
The goblin bonus action power would have lost a lot of its bite if only one goblin minion could do it.
Description: The Multiattack solution allows me to give a creature multiple attacks without giving it too much mobility, reactions, opportunity attacks, and so on.