I'm not engaging in the Pica thread any further, but:
* Buildings over 10s of metres high look like ants on Pica.
* The finger of a much smaller golem dwarfs Harudjin whose 22 metres tall.
* He's as tall as the Flower Hill which is a legit mountain.
Pica being anything below a few kilometres is impossible. He's not 1.5 km, the best calcs place him at 2.7 km.
I don't think this helos your argument. We see fodder struggling to (and doing so successfully) retain their weapons, so his power clearly affected them. If some Marine fodder could keep their weapons, how much more Zoro with his insane strength?