Yeah, that was legit confusing text on the cards at the time as well.
I remember getting in an argument over players because they claimed I had to shuffle exactly 5. Less than doesnt count, so I couldnt use the card if I had only 3 energies in my discard pile, and had to chuck the item card in the discard for failed use, and forgo the energy retrieval effect.
I pleaded that it would be a bit harsh of a stipulation, and text likely meant 'up to 5', but I was countered with the 'all the text on other cards is fine, if it needed detail, they would mention it' and I was biased because I needed the energies on that turn.
Anyway, happy they did this, or you KNOW some family nights in the future are gonna be ruined out of card text arguments.