0 physical strength on Balor's scale doesn't mean 0 ability to lift, or no combat power at all. King and Gloxinia can both easily support their own body weight and apply some force to their punches.
The armour
isn't made of metal, and neither are the blades. All of Chastefol's forms are organic plants/originate from organic plants.
Yes, magic wood can be harder than steel. That doesn't stop the fact that it's called and shown to be wood, with numerous forms of organic plant-life.
One person has.
Idk.
No strong opinions there.