That, in my experience, isn't a "build more supports" thing, unless you equally disperse damage across supports covering the caved in area.
if one of my supports breaks through some means just because the same area is being covered by another I'm still gonna get smashed because my support prevented a cave in at some point.
I would really just need to see how I feel about it in a month when I'm swimming in excess metal and I've felt my way around every support. If this is a "i forgot a 0" case and two nuggets would repair 120% of the thing's health in this instance then I could understand and, reluctantly, accept it.